Ohm's Law Quiz

What is the formula for Ohm's law?

• V = I * R

• R = V / I

• V = R / I

• I = V / R

What is the unit of resistance?

• Joule (J)

• Ohm (Ω)

• Ampere (A)

• Volt (V)

If the voltage is 12 volts and the current is 3 amperes, what is the resistance?

• 10 ohms

• 2 ohms

• 6 ohms

• 4 ohms

If the resistance is 6 ohms and the current is 2 amperes, what is the voltage?

• 12 volts

• 10 volts

• 8 volts

• 4 volts

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

• Decreases

• Increases

• Fluctuates

• Remains the same

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

• The current in the circuit will fluctuate.

• The current in the circuit will remain the same.

• The current in the circuit will decrease.

• The current in the circuit will increase.

What happens to the current in a circuit if the voltage is decreased?

• Current becomes zero

• Current remains the same

• Current increases

• Current decreases

What is the relationship between voltage, current, and resistance in a circuit?

• The relationship between voltage, current, and resistance in a circuit is described by Ohm's Law.

• Voltage is directly proportional to resistance and inversely proportional to current

• Current is directly proportional to voltage and inversely proportional to resistance

• Resistance is directly proportional to current and inversely proportional to voltage

How is Ohm's law used to calculate the unknown quantity in a circuit?

• By asking a psychic for help

• By rearranging the formula V = I * R to solve for the unknown quantity (V, I, or R)

• By consulting a magic eight ball

• By using the Pythagorean theorem