Download Current and Power Calculations Practice

Extra Current and Power
Calculations Practice
Once again!!!
Current Calculation #1
• What is the current flowing through a
circuit that has a voltage of 100.0 volts
and a resistance of 15.0 ohms?
I=V
R
I = 6.7 amps
I = 100.0 volts
15.0 ohms
Current Calculations #2
• What is the current of a stove with a
voltage of 22.0 volts and a resistance of
5.0 ohms?
I=V
R
I = 4.4 amps
I = 22.0 volts
5.0 ohms
Current Calculations #3
• What is the current of a circuit with a
voltage of 12.0 volts and a resistance of
10.0 ohms?
I=V
R
I = 1.2 amps
I = 12.0 volts
10.0 ohms
Current Calculation #4
• What is the current of a circuit with a
voltage of 80.0 volts and a resistance of
30.0 ohms?
I=V
R
I = 2.7 amps
I = 80.0 volts
30.0 ohms
Power Calculation #1
• A stereo uses 0.5 amps from a source
of 115.0 volts. How much power is
used by the stereo?
P=VxI
P = 115.0 volts x 0.5 amps
P = 57.5 Watts
Power Calculation #2
• A 9-volt battery produces a current of
0.5 amps. What is the power in the
circuit?
P=VxI
P = 9.0 volts x 0.5 amps
P = 4.5 Watts
Power Calculation #3
• A 1.5-volt battery produces a current of
0.2 amps. What is the power in the
circuit?
P=VxI
P = 1.5 volts x 0.2 amps
P = 0.3 Watts
Power Calculation #4
• A 15-volt battery produces a current of
0.225 amps. What is the power in the
circuit?
P=VxI
P = 15.0 volts x 0.225 amps
P = 3.375 Watts