Electric Current and Ohm's Law

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

• 12 V

• 21 V

• 4/3 V

• 3/4 V

The mathematical relationship among Voltage, Current, and Resistance

• Faraday's Law

• Tesla's Law

• Edison's Law

• Ohm's Law

What is the formula for ohms law?

• 1+2=3

• R X E = I

• V =I x R

• E= MC squared

What unit is used to measure current?

• Ohms

• Omega

• Volts

• Amps

What is the unit for Resistance?

• Ohms

• Volts (V)

• amps (A)

Match the following quantities with their units.

• Amps, A

• Current, I

• Ohms, Ω

• Energy, E

• Volts, V

• Voltage, V

• Joules, J

• Resistance, R

What unit is used to measure resistance?

• Ohms

• Omega

• Volts

• Amps

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

• 1/3 ohms

• 3 ohms

• 27 ohms

• 9 ohms

What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?

• 25 V

• 10 V

• 2.5 V

• 0.4 V

How do you calculate voltage?

• Current X Resistance

• Resistance ÷ Current

• Current ÷ Resistance

• Measure it with a ruler