AC & DC Electrical Circuits Quiz Practice Quiz…

Q: What does 'P' represent in the basic electrical formulas (P, V, I, R)?

Power — P represents Power, measured in Watts.

Q: Which formula represents Ohm's Law?

V = I * R — Ohm's Law states that Voltage (V) is equal to Current (I) multiplied by Resistance (R).

Q: In a DC circuit, what is the relationship between voltage (V), current (I), and resistance (R)?

R = V / I — Resistance (R) is calculated by dividing Voltage (V) by Current (I).

Q: What is the unit of measurement for electric current?

Ampere (A) — Electric current is measured in Amperes (A).

Q: If a motor has a power of 10kW and a voltage of 220V, what formula would you use to calculate the current?

I = P/V — The formula to find current (I) is Power(P)/Voltage(V).

Q: What does 'R' represent in the basic electrical formulas?

Resistance — R represents Resistance, which opposes the flow of current.

Q: What is the unit of measurement for power?

Watt (W) — Power is measured in Watts (W).

Q: In a DC circuit, if the voltage is increased and the resistance remains constant, what happens to the current?

Increases — According to Ohm's law, if voltage increases with constant resistance, the current increases proportionally.

Q: What formula can be used to calculate power (P) in a circuit if you know the voltage (V) and current (I)?

P = V * I — Power (P) is equal to Voltage (V) multiplied by Current (I).

Q: Which of the following formulas is used to calculate the resistance (R) in a circuit, knowing power (P) and current (I)?

R = P / I^2 — R = P / I^2 (Resistance equals Power divided by Current squared)

Question 1 of 10

What does 'P' represent in the basic electrical formulas (P, V, I, R)?

P represents Power, measured in Watts.

Question 2 of 10

Which formula represents Ohm's Law?

Ohm's Law states that Voltage (V) is equal to Current (I) multiplied by Resistance (R).

Question 3 of 10

In a DC circuit, what is the relationship between voltage (V), current (I), and resistance (R)?

Resistance (R) is calculated by dividing Voltage (V) by Current (I).

Question 4 of 10

What is the unit of measurement for electric current?

Electric current is measured in Amperes (A).

Question 5 of 10

If a motor has a power of 10kW and a voltage of 220V, what formula would you use to calculate the current?

The formula to find current (I) is Power(P)/Voltage(V).

Question 6 of 10

What does 'R' represent in the basic electrical formulas?

R represents Resistance, which opposes the flow of current.

Question 7 of 10

What is the unit of measurement for power?

Power is measured in Watts (W).

Question 8 of 10

In a DC circuit, if the voltage is increased and the resistance remains constant, what happens to the current?

According to Ohm's law, if voltage increases with constant resistance, the current increases proportionally.

Question 9 of 10

What formula can be used to calculate power (P) in a circuit if you know the voltage (V) and current (I)?

Power (P) is equal to Voltage (V) multiplied by Current (I).

Question 10 of 10

Which of the following formulas is used to calculate the resistance (R) in a circuit, knowing power (P) and current (I)?

R = P / I^2 (Resistance equals Power divided by Current squared)

AC & DC Electrical Circuits Quiz