Calculating Electricity in a Circuit

What is the voltage (V) in this circuit?

• V = 1,950 volts

• V = 8.67 volts

• V = 0.16 volts

• V = 145 volts

What is the current (I) in this circuit?

• I = 3 amps

• I = 0.3 amps

• I = 27 amps

• I = 12 amps

What is the current (I) in this circuit?

• I = 10 amps

• I = 30 amps

• I = 0.1 amps

• I = 1,440 amps

What is the current (I) in this circuit?

• I = 1.5 amps

• I = 0.6 amps

• I = 54 amps

• I = 0 amps

What is the total resistance (R) in this circuit?

• R = 2 Ω

• R = 0.5 Ω

• R = 7,200 Ω

• R = 1 Ω

Calculate the current flowing through the circuit of a radio that has a resistance of 20Ω and is powered by a 3-volt battery.

• I = 0.15 amps

• I = 6.7 amps

• I = 60 amps

• I = 3 amps

Calculate the voltage (V) in a circuit with a resistance of 50Ω if the current is 2.5 amps.

• V = 125 volts

• V = 20 volts

• V = 0.05 volts

• V = 9 volts

Calculate the resistance (R) of a 9 volt battery that provides a current of 3 amps through a conductor.

• R = 3 Ω

• R = 0.3 Ω

• R = 27 Ω

• R = 0 Ω

A string of holiday lights runs on 120 V and uses 0.5 A of current. What is the total resistance of the lights?

• R = 240 Ω

• R = 60 Ω

• R = 100 Ω

• R = 160 Ω

A heater has a resistance of 30 Ω and a current of 4 amps flows through it. What is the voltage supplied to the heater?

• V = 120 volts

• V = 7.5 volts

• V = 0.13 volts

• V = 12 volts