Free Printable current electricity

Worksheets

current electricity

Total questions: 25

Worksheet time: 10mins

Name

Class

Date

An example of a conductor is :

a glass paperweight

a plastic cap

a metal screw

a wooden handle

All wires used in electric circuits should be covered with:

a colored material.

a conducting material.

an insulating material.

none of these.

^{Is this circuit open or closed?}

Closed

Open

What is an electric current?

a build up of electrons

the difference in charge between 2 points

the flow of electrons over a circuit

the opposition to flow of electrons

In a series circuit with 4 bulbs:

a switch is never used

all of the bulbs become dimmer if another bulb is added

There are many paths for electricity to take

the remaining 3 bulbs stay lit if one burns out

What part of a circuit is this object?

power source

load

pathway

switch

What is the unit we use to measure electric current?

ampere (amp)

ohm

volt

newton

what is an electric cell?

a device that converts mechanical energy into electrical energy

a device that turns stored chemical energy into electrical energy

a device that devours electrical energy

a device that converts static electricity into mechanical energy

What is a storage cell?

a one-use source of electrical energy

a re-chargeable source of electrical energy

a one-use source of solar electricity

10.

What is a dry cell battery

one that uses water to make electricity

one that uses a liquid electrolyte solution

one that uses a paste electrolyte

11.

What type of cell is necessary to make solar cells practical?

primary cells

storage cells

none exist that can hold that much energy

12.

Choose the correct sentence.

This circuit will work because it is an open circuit.

This circuit will work because it is a closed circuit.

This circuit will NOT work because it is an open circuit.

This circuit will NOT work because it is a closed circuit.

13.

What does the W stand for on the ohm's law wheel?

amps

volts

watts

ohms

14.

What 1 kW is equivalent to __________ watts?

100 W

1,000 W

10,000 W

10 W

15.

What is the wattage rating of a 240 volt, 6 amp device?

1.44

14.4

144

1440

16.

What does the Greek letter Ω, (i.e. Omega) represent?

amps

volts

watts

ohms

17.

if resistance of a circuit is tripled, and the voltage stays the same, the current will_

double

decrease by one third

triple as will

not change

18.

Potential difference is another term for

current

voltage

energy

watts

19.

what is the power of a lamp whose current is 6 A and the voltage across it is 120 V?

120 W

720 W

16 W

10 W

20.

What kind of circuit is this?

series

parallel

21.

If bulb 1 burns out, what will occur?

bulbs 2 and 3 will go out

bulbs 2 and 3 receive more volts

bulbs 2 and 3 will stay lit

nothing will happen

22.

This is the symbol for a _____?

switch

light

battery

wires

23.

What is this symbol for?

light bulb

switch

battery

resistor

24.

What is another name for a lightbulb in a circuit?

Switch

Load

Power Source

25.

Is this switch closed or open?

Closed

Open

Reset

current electricity

Total questions: 25

Worksheet time: 10mins

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