WorksheetsElectric Power
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
1. What is the equation to solve Power in Electricity
a)
V=IXR
b)
PV=nRT
c)
P=VXI
P=VXR
P=VXR
d)
none
2.
The rate at which energy is converted from one form to another
a)
power
b)
voltage
c)
current
d)
none
3.
The unit for Power is
a)
Joules
b)
Amperes
c)
Watts
d)
None
4.
1. One joule per second is also known as
a)
watt
b)
joule
c)
kilowatt
d)
none
5.
A kilowatt is
a)
1000 Amps
b)
1000 watts
c)
1000 volts
d)
none
6.
What is the voltage difference in a circuit that uses 2420 W of power if 11 A of current flows into the circuit?
a)
220 v
b)
0.004 v
c)
2431 v
d)
532400 v
7.
How much does it cost to light 6 100 W light bulbs for 6 hours if the price of electrical energy is $0.09/kWh?
a)
$4.00
b)
$6.24
c)
$3.24
d)
$5.24
8.
The current in an appliance is 3 A and the voltage difference is 120 V. How much power is being supplied to the appliance?
a)
10000 w
b)
220 w
c)
420 w
d)
360 w
9.
The current in an appliance is 3 A and the voltage difference is 120 V. How much power is being supplied to the appliance?
a)
10000 v
b)
220 v
c)
420 v
d)
360 v
10.
What is the current flowing into a microwave oven that requires 700 W of power if the voltage difference is 120 V?
a)
4.3A
b)
6.3 A
c)
5.83 A
d)
none
11.
How does flipping a switch turn a light on?
a)
It steps up the voltage
b)
It generates an electromagnetic field
c)
It opens a circuit
d)
It closes a circuit
12.
How does flipping a switch turn a light on?
a)
It steps up the voltage
b)
It generates an electromagnetic field
c)
It opens a circuit
d)
It closes a circuit
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