OHM'S LAW

How much current is in a circuit that includes a 9 -volt battery, and a light bulb with a resistance of 3 ohms?

• 3 amperes

• 6 amperes

• 9 amperes

• 12 amperes

A circuit contains two 1.5 -volt and a bulb with a resistance of 3 ohms. Calculate the current.

• 1 amperes

• 2 amperes

• 3 amperes

• 4 amperes

What is the voltage of a circuit with 15 amperes of current and toaster with 8 ohms of resistance?

• 30 volts

• 60 volts

• 90 volts

• 120 volts

A light bulb has a resistance of 4 ohms and a current of 2 amperes. What is the voltage across the bulb?

• 8 volts

• 18 volts

• 28 volts

• 38 volts

How many ohms of resistance must be present in a circuit that has 120 volts and a current of 10 amperes?

• 0.12 ohms

• 12 ohms

• 0.21 ohms

• 21 ohms

V =6V

I = 2A

R =?

• 1 Ω

• 2 Ω

• 3 Ω

• 4 Ω

V =6 V

I = ?

R =6 Ω

• 1 A

• 3 A

• 5 A

• 7 A

V =10 V

I = ?

R = 5 Ω

• 2 Ω

• 4 Ω

• 6 Ω

• 8 Ω

V = 16 V

I = 2 A

R = ?

• 4 Ω

• 8 Ω

• 16 Ω

• 32 Ω

V = ?

I = 8 A

R = 4 Ω

• 16 V

• 32 V

• 64 V

• 128 V