Electric power

The voltage supplied to a circuit is 17 V and the current running through is 10 A. What is the power generated?

• 170 W
• 170 A
• 1.7 V
• 1.7 W

When given the voltage and the current, which equation of Power should you use?

• Voltage x Current
• Current² x Resistance
• Both

Watts is the same as...

• Joules per second
• Voltage per second
• Current per second

Watts is the unit of...

• Power
• Current
• Voltage
• Resistance 

Watts is the unit of...

• Power
• Current
• Voltage
• Resistance 

How does flipping a switch turn a light on?

• It steps up the voltage
• It generates an electromagnetic field
•  It opens a circuit
•  It closes a circuit 

What is the current flowing into a microwave oven that requires 700 W of power if the voltage difference is 120 V?

• 4.3A
• 6.3 A
• 5.83 A
• none

The current in an appliance is 3 A and the voltage difference is 120 V. How much power is being supplied to the appliance?

• 10000 v
• 220 v
• 420 v
• 360 v

If an oven has a power of 2000 W and the voltage is 230 V what fuse is required?

• 3A
• 5A
• 13A

a pair of 15-watt computer speakers are connected to a 12-volt power supply. what is the electric current running through the speakers? 

• 1.25 A
• 0.8 A
• 12.5 A
• 180 A