Free Printable Topic 7 Electricity Review

Worksheets

Topic 7 Electricity Review

Total questions: 20

Worksheet time: 16mins

Name

Class

Date

A poor conductor would:

be thick

have a high electric resistance

have a low electric resistance

be short

What kind of circuit is this?

Series

Consecutive

Parallel

Training

Which statement best explains why the lamp does not glow?

Circuit 1 is an open circuit.

Circuit 1 is a closed circuit.

The negative terminal of Circuit 1 is connected to the cell.

The positive terminal of Circuit 1 is connected to the cell.

Which of these will repel each other?

Negatively charged balloon and positively charged sphere.

Negatively charged balloon and neutral sphere.

Negatively charged balloon and negatively charged sphere.

Negatively charged balloon and neutral wall.

Which formulas represents Ohm's law?

V=IR

R=IV

I=RV

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

240 Ohms

60 Ohms

$\frac{1}{240}$ Ohms

180 Ohms

Adding more resistance to a circuit will:

increase electric current

make it explode

increase voltage

decrease electric current

If the Voltage is increased and the resistance stays the same, Current will

Increase

Decrease

Stay the same

Material that do not allow heat and electricity to pass through them easily are called _________

Conductors

Insulators

D-Cell

10.

The accumulation of excess electric charge on an object is called

Static electricity

Electric discharge

Resistance

Circuit

11.

The loss of an unbalanced electric charge is an

electric force

electric field

electric discharge

12.

In an electrically neutral object, what must be true about the numbers of protons and electrons?

They are equal

There are more protons than electrons

The protons and and neutrons must be equal

There are more electrons than protons

13.

When is the electrostatic force between two charges the strongest?

When charges are very close to each other

When charges are very far apart from each other

When the electric field is constant

14.

If a negatively charged rod touches a conductor, the conductor will be charged by what method?

Friction

Conduction

Induction

Convection

15.

Which of these is the best definition of polarization?

The object gains a positive or negative charge from another object.

The charges in a neutral object separate due to a nearby charged object.

Charges on a neutral object jump off onto a charged object due to attraction of opposite charges.

Two objects attract each other because they are both charged.

16.

A charged balloon is brought near an electroscope but DOES NOT touch the electroscope. This is an example of charging by

Conduction

Convection

Friction

Induction

17.

If one bulb goes out in a series circuit, the remaining bulbs...

also go out

get brighter

get dimmer

explode, leaving shards of glass everywhere

18.

This circuit has more than one loop. When one light goes out, the others stay on.

closed circuit

series circuit

parallel circuit

open circuit

19.

The process of removing the excess charge on an object by means of the transfer of electrons between it and another object

Grounding

Conduction

Induction

Friction

20.

A 200-W light bulb is connected across a 100-V dc power supply. What current will flow through this bulb?

0.90 A

0.36 A

0.60 A

2.0 A

Reset

Topic 7 Electricity Review

Total questions: 20

Worksheet time: 16mins

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