Ohm's Law Calculations

What is the formula to calculate resistance using Ohm's Law?

• R = V / I

• R = V - I

• R = I / V

• R = V * I

If a circuit has a resistance of 10 ohms and a current of 2 amps flowing through it, what is the voltage across the circuit?

• 15 volts

• 20 volts

• 25 volts

• 5 volts

In a circuit with a resistance of 5 ohms and a voltage of 15 volts, what is the current flowing through the circuit?

• 3 amperes

• 5 amperes

• 10 amperes

• 20 amperes

A circuit has a current of 0.5 amps and a voltage of 12 volts. What is the resistance of the circuit?

• 6 ohms

• 18 ohms

• 30 ohms

• 24 ohms

If a resistor has a resistance of 100 ohms and a current of 0.2 amps flowing through it, what is the voltage drop across the resistor?

• 25 volts

• 20 volts

• 15 volts

• 10 volts

What is the unit of resistance in Ohm's Law calculations?

• Volt

• Ampere

• Joule

• Ohm (Ω)

In a series circuit with three resistors of 4 ohms each, what is the total resistance of the circuit?

• 8 ohms

• 12 ohms

• 20 ohms

• 16 ohms

If a circuit has a voltage of 24 volts and a resistance of 6 ohms, what is the current flowing through the circuit?

• 4 amps

• 8 amps

• 6 amps

• 2 amps

What happens to the current in a circuit if the resistance is increased while keeping the voltage constant?

• The current in the circuit will fluctuate.

• The current in the circuit will increase.

• The current in the circuit will remain the same.

• The current in the circuit will decrease.

How can Ohm's Law be applied to calculate the power dissipated in a circuit?

• To calculate the power dissipated in a circuit using Ohm's Law, multiply the voltage across the circuit by the current flowing through it.

• Subtract the current from the voltage

• Add the voltage and current values together

• Divide the voltage by the resistance of the circuit