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Worksheets

Electricity

Total questions: 22

Worksheet time: 6hrs 30mins

Name
Class
Date
1.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
2.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
3.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
4.
Two batteries in a circuit make the lights in the circuit brighter than one battery.
a)
true
b)
false
5.
When socks get stuck to towels in your dryer, this is an example of________________
a)
current electricity
b)
static electricity
6.
What is the major difference between static electricity and current electricity?
a)
Current electricity involves a continuous flow of neutrons; static electricity is a sudden transfer of protons
b)
Current electricity can be deadly; static electricity is almost always safe
c)
In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons
d)
Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons
7.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
8.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
9.

How can it be explained that someone's hair can stick to a balloon?

a)

There is static electricity.

b)

There is too much dust in the air.

c)

The person needs to wash his hair.

10.

Identify the part of a circuit that is labeled 2.

a)

battery

b)

wire

c)

switch

d)

bulb

11.

Identify the part of a circuit that is labeled 3.

a)

battery

b)

wire

c)

switch

d)

bulb

12.
A/an _________________ is a material that will not allow electricity to flow through it.
a)
insulator
b)
conductor
13.

Mahra finds that all of the electric cords in her school are covered with plastic. Why is it important to cover the electric cords with plastic?

a)

Plastic is an insulator.

b)

Plastic is a conductor.

c)

Plastic is strong.

d)

Plastic will melt.

14.

What unit is used to measure current?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

15.

What unit is used to measure resistance?

a)

Ohms

b)

Omega

c)

Volts

d)

Amps

16.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

17.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

18.

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

a)

12 V

b)

21 V

c)

4/3 V

d)

3/4 V

19.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
20.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
21.
What is this symbol?
a)
resistor
b)
switch
c)
battery
d)
bulb
22.
This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?
a)
3 Amps
b)
192 Amps
c)
2 Amps
d)
4 Amps