Electronics Practice: CFAT & Trades Prep (PDF)

If you’re staring at a circuit diagram and feeling a knot in your stomach, you aren’t alone. But here’s the cold, hard truth: in Canada, failing this section isn’t just a bad grade—it’s the “Six-Month Standoff.” If you stumble on the CFAT electrical information practice test, you could be sidelined for up to a year before your next shot at a military career. If you fail the Alberta or Canada Trades electrician apprentice practice test, you’re out another $150 in fees and months of lost wages while your “Blue Book” sits empty.

We’ve spent years at our kitchen table in Victoria triple-checking these questions to ensure they actually help. We strip away the academic jargon and show you exactly how to read a circuit so you can pass your entrance exam, get your license, and get to work in the Canadian trades immediately.

To master the basics for the Canadian Forces Aptitude Test (CFAT) or the Alberta Trades Entrance exam,  or the Canada Trades, you have to move past “memorizing” and start “visualizing.” In the Canadian trades, we don’t just care about the math; we care about whether the circuit actually works without blowing a fuse.

Here is the “Kitchen Table” breakdown of the core logic you’ll need to pass.

1. The Power Source: AC vs. DC

The first thing to understand is how the electricity is moving.

• DC (Direct Current): Think of a battery. The electrons flow in one direction, like water through a hose. This is what you’ll find in most CFAT mechanical questions.
• AC (Alternating Current): This is what powers your home in Canada. The flow reverses direction periodically (60 times a second, or 60 Hz).

2. The “Golden Triangle”: Ohm’s Law

If you only learn one formula for the Canada Trades exam, make it this one. Ohm’s Law (V = I · R) defines the relationship between:

1. Voltage (V): The “pressure” pushing the electrons (Measured in Volts).
2. Current (I): The “flow” of the electrons (Measured in Amps).
3. Resistance (R): The “friction” slowing them down (Measured in Ohms Ω).

Brian’s Shortcut: To solve for what’s missing, just cover that letter with your thumb. Want to find Voltage? Cover V and you see I · R.
Want to find Current? Cover I and you see V over R.

3. Circuit Logic: Series vs. Parallel

This is the “make or break” section for most applicants. You need to know how components behave when they are linked up.

Series Circuits (The “One Path” Rule)

In a series circuit, there is only one path for the electricity.

• The Big Risk: If one bulb burns out, the whole path is broken, and every light goes dark.
• The Math: Resistance adds up (R_total = R₁ + R₂ + …). The more things you add, the harder it is for the current to flow.

Parallel Circuits (The “Independent” Rule)

In a parallel circuit, each component has its own “branch” or bridge back to the power source.

• The Benefit: This is how Canadian homes are wired. If the light in the kitchen burns out, your TV in the living room stays on because it has its own path.
• The Math: Adding more branches actually decreases total resistance because you’re giving the electricity more paths to take.

4. Canadian Electrical Code (CEC) Basics

You don’t need to be a master electrician to pass an entrance exam, but you should know these “Safety Standards” that the AIT and Red Seal exams love to throw at you:

• Conductors vs. Insulators: You need to know that Copper and Aluminum are the workhorses (conductors), while Plastic and Rubber are the “labourers” that keep the electricity where it belongs (insulators).
• Grounding: In Canada, we use a “ground” wire to provide a safe path for electricity to return to the earth if there is a fault. This prevents you from becoming the path yourself!
• Fuses and Breakers: These are “weak links” designed to break the circuit if the current gets too high. It’s better for a $5 fuse to melt than for your house to catch fire.

The “Stocker” Strategy for Success

When you’re taking the test and see a complex diagram, don’t panic. Take a breath and follow the “Flow”:

1. Start at the Battery: Trace the path with your finger.
2. Look for Gaps: Is there a break (Open Circuit)? If so, nothing works.
3. Count the Paths: Is there only one way home (Series) or are there choices (Parallel)?

We’ve spent years triple-checking our practice questions to make sure these diagrams look exactly like what you’ll see on exam day. Don’t let a simple gear or a parallel bulb hold you back from your apprenticeship.

To master the basics for the Canadian Forces Aptitude Test (CFAT) or the Alberta Trades Entrance exam, you have to move past “memorizing” and start “visualizing.” In the Canadian trades, we don’t just care about the math; we care about whether the circuit actually works without blowing a fuse.

Here is the “Kitchen Table” breakdown of the core logic you’ll need to pass.

1. The Power Source: AC vs. DC

The first thing to understand is how the electricity is moving.

• DC (Direct Current): Think of a battery. The electrons flow in one direction, like water through a hose. This is what you’ll find in most CFAT mechanical questions.
• AC (Alternating Current): This is what powers your home in Canada. The flow reverses direction periodically (60 times a second, or 60 Hz).

2. The “Golden Triangle”: Ohm’s Law

If you only learn one formula for the Canada Trades exam, make it this one. Ohm’s Law (V = I · R) defines the relationship between:

1. Voltage (V): The “pressure” pushing the electrons (Measured in Volts).
2. Current (I): The “flow” of the electrons (Measured in Amps).
3. Resistance (R): The “friction” slowing them down (Measured in Ohms Ω).

Brian’s Shortcut: To solve for what’s missing, just cover that letter with your thumb. Want to find Voltage? Cover V and you see I X R. Want to find Current? Cover I and you see V over R.

3. Circuit Logic: Series vs. Parallel

This is the “make or break” section for most applicants. You need to know how components behave when they are linked up.

Series Circuits (The “One Path” Rule)

In a series circuit, there is only one path for the electricity.

• The Big Risk: If one bulb burns out, the whole path is broken, and every light goes dark.
• The Math: Resistance adds up (R_total = R₁ + R₂ + …). The more things you add, the harder it is for the current to flow.

Parallel Circuits (The “Independent” Rule)

In a parallel circuit, each component has its own “branch” or bridge back to the power source.

• The Benefit: This is how Canadian homes are wired. If the light in the kitchen burns out, your TV in the living room stays on because it has its own path.
• The Math: Adding more branches actually decreases total resistance because you’re giving the electricity more paths to take.

4. Canadian Electrical Code (CEC) Basics

You don’t need to be a master electrician to pass an entrance exam, but you should know these “Safety Standards” that the AIT and Red Seal exams love to throw at you:

• Conductors vs. Insulators: You need to know that Copper and Aluminum are the workhorses (conductors), while Plastic and Rubber are the “labourers” that keep the electricity where it belongs (insulators).
• Grounding: In Canada, we use a “ground” wire to provide a safe path for electricity to return to the earth if there is a fault. This prevents you from becoming the path yourself!
• Fuses and Breakers: These are “weak links” designed to break the circuit if the current gets too high. It’s better for a $5 fuse to melt than for your house to catch fire.

The “Stocker” Strategy for Success

When you’re taking the test and see a complex diagram, don’t panic. Take a breath and follow the “Flow”:

1. Start at the Battery: Trace the path with your finger.
2. Look for Gaps: Is there a break (Open Circuit)? If so, nothing works.
3. Count the Paths: Is there only one way home (Series) or are there choices (Parallel)?

We’ve spent years checking our practice questions to make sure these diagrams look exactly like what you’ll see on exam day. Don’t let a simple gear or a parallel bulb hold you back from your apprenticeship.

The Math that Matters: Ohm’s Law Practice Questions & Watt’s Law Calculations.

Practice Question (AIT Style):

A heater is connected to a 120V residential circuit. The heating element has a resistance of 15 Ω. What is the current flowing through the circuit?

The Solution: > Using the triangle, we cover I (Current). This gives us V / R.

120V / 15 Ω = 8 Amps.

2. Watt’s Law: The Power Play (P = I · V)

While Ohm’s Law tells us how electricity moves, Watt’s Law tells us how much work is being done. In Canada, we measure electrical power in Watts (W).

• Power (P): Measured in Watts. This is the “muscle”— how much heat a baseboard heater gives off or how bright a bulb shines.
• Current (I): Still your Amps.
• Voltage (V): Still your Volts.

Practice Question (CFAT Style):

A military vehicle’s spotlight is rated at 60 Watts. If the vehicle operates on a 12V DC system, how many Amps does the spotlight draw?

The Solution:

Cover I in the Power Triangle. This gives us P / V.

60W / 12V = 5 Amps.

General Electricity and Circuits

1. What is the difference between alternating and direct current?

a. Direct current reverses direction periodically and alternating current flows in one direction.
b. Alternating current reverses direction and direct current flows in one direction.
c. Both alternating and direct current periodically reverse direction.
d. Both alternating and direct current flow in one direction only.

2. Is residential power AC or DC current?

a. Residential power is AC
b. Residential power is DC
c. Residential power is neither

3. Two wires run to a machine. One wire is 10mm thick, and the other is 5mm. If the two wires are carrying the same current, the larger wire:

a. Requires less voltage
b. Requires more voltage
c. Requires the same voltage
d. It cannot be determined from the information given

Open and Closed Circuits

4. Which of the following best describes an open circuit?

a. A circuit with a complete path for current flow
b. A circuit with no gaps or breaks in the current path
c. A circuit that prevents the flow of electricity due to a gap or break
d. A circuit that allows uninterrupted current flow

5. Which of the following statements is true about closed circuits?

a. They have no flow of electrons
b. They have higher resistance due to a break in the current path
c. They require insulators to prevent accidental shorts
d. Devices connected to a closed circuit will not function

Series and Parallel Circuits

6. Which configuration are bulbs generally connected to ensure continuous illumination even if one bulb burns out?

a. Series
b. Parallel
c. Both series and parallel
d. Neither series nor parallel

7. Which configuration is commonly used when connecting batteries to achieve the desired voltage?
a. Series
b. Parallel
c. Either series or parallel
d. Neither series nor parallel

Load

8. What is a circuit called that contains two or more loads but only one path for current to flow?

a. Series
b. Parallel
c. Series-parallel
d. AC

Power Source

9. Which of the following is true about power in a circuit?

a. Power is the rate at which charge flows through a circuit.
b. Power is always equal to the voltage in a circuit.
c. Power is inversely proportional to the resistance in a circuit.
d. Power is measured in ohms (Ω).

Conductors

10. Which of the following items would NOT be part of an electrical circuit?

a. Power source, such as a battery
b. Electrical appliance, such as a light bulb
c. Wires made of gold
d. Wires made of plastic

11. Which of the following materials is commonly used as a conductor in electrical circuits?

a. Glass
b. Rubber
c. Copper
d. Plastic

1. B
In alternating current (AC, also ac), the movement of electric charge periodically reverses direction. In direct current (DC, also dc), the flow of electric charge is only in one direction.

2. A
Residential power is alternating current, AC.

3. A
If the two wires are carrying the same current, the larger wire requires less voltage.

Open and Closed Circuits

4. C
An open circuit refers to a circuit that is not complete, meaning it has a gap or break that interrupts the flow of electricity.

5. C They require insulators to prevent accidental shorts

Explanation: Closed circuits require insulators to prevent accidental shorts, which can cause disruptions or hazards in the circuit. Insulators are necessary to ensure the current flows through the intended path.

Series and Parallel Circuits

6. B
Light Bulbs are generally connected in parallel to ensure continuous illumination even if one bulb burns out.

7. A
Batteries are connected in series to give the desired voltage since voltages add up when connected in series.

8. B
A circuit that contains two or more loads but only one path for current to flow is called a parallel circuit. In a parallel circuit, each load has its own separate path for current to flow, but they share the same voltage source. This allows the loads to operate independently, and the total current entering the parallel circuit is divided among the different branches.

Power Source

9. A
Power in a circuit represents the rate at which electrical energy is transferred or consumed. It is not equal to voltage alone but depends on the current flowing through the circuit as well.

Conductors

10. C

Gold wires are not used due to cost.  Copper or aluminum wires are more commonly used conductors in circuits. Plastic wires are used for insulation.

11. C

Copper is one of the most commonly used conductors in electrical circuits due to its high conductivity and availability. Glass, rubber, and plastic are insulating materials and do not conduct electricity.