Electric Current Quiz

What is the formula for Ohm's law?

• V = I * R

• V = I / R

• V = I ^ R

• V = I + R

What is the unit of electric current?

• D

• C

• B

• A

If the voltage is 12 volts and the resistance is 4 ohms, what is the current flowing through the circuit?

• 6 amperes

• 2 amperes

• 3 amperes

• 10 amperes

What happens to the current in a circuit if the resistance is increased?

• Current decreases

• Current becomes negative

• Current remains the same

• Current increases

What is the relationship between voltage, current, and resistance in a circuit according to Ohm's law?

• V = I * R

• V = I + R

• V = I / R

• V = I ^ R

What is the SI unit of resistance?

• volt

• watt

• ohm

• ampere

If the current flowing through a circuit is 3A and the resistance is 6 ohms, what is the voltage across the circuit?

• 18V

• 9V

• 24V

• 12V

What is the effect of doubling the voltage in a circuit according to Ohm's law?

• The power will decrease

• The current will halve

• The current will double

• The resistance will double

What is the symbol for electric current?

• E

• I

• C

• A

If the resistance in a circuit is 10 ohms and the current flowing through it is 2A, what is the voltage across the circuit?

• 20V

• 5V

• 30V

• 15V