Free Printable ELECTROMAGNETIC INDUCTION

Worksheets

ELECTROMAGNETIC INDUCTION

Total questions: 15

Worksheet time: 8mins

Name

Class

Date

Electromagnetic induction is change in ___________________.

surface area

magnetic poles

magnetic flux

Voltage can be induced in a wire by

a. moving the wire near a magnet.

b. moving a magnet near the wire.

c. changing the current in a nearby wire.

d. all of these

What would happen if I move a bar magnet in and out of a coil of copper wire?

Electric current would disappear

The magnet would explode

Electric current will flow through the wire

It would produce a gravitational field

A magnet is moved in and out of a coil of wire connected to a high-resistance voltmeter. If the number of coils doubles, the induced voltage

quadruples

doubles

is the same

halves

A magnet can move in a coil of wire to produce electricity in which system?

Generator

Motor

Magnet

Transformer

___ Law says that the Induced current is proportional to the change of magnetic flux

Lenz'

Faraday's

Ampere's

Which description best applies to Lenz's Law?

An induced current occurs when a magnet passes through a tube.

When a change in magnetic field occurs to a coil the direction of current goes in the in the other direction to this change.

The direction of an induced current is such to align with the change that created it.

A magnet is a tube is always slowed by its magnetic field.

What happens to the galvanometer if the copper rod is moved upwards?

No change

Deflect to the right

Deflect to the left

Deflect to the right and left

Which activity will produce the highest current?

Move the magnet bar into the coil while the coil remains stationery

Move the coil into the magnet bar while the magnet remains stationery

Move the coil and magnet towards each other

Move the coil and magnet away from each other

10.

Which action will increase the deflection of the galvanometer pointer?

The magnetic pole is reversed

The number of turns of coils is increased

The coil is made from insulated wire

The magnet is slowly pushed into the coil

11.

The voltmeter is at 0 in this image. How would you manipulate the experiment to create electricity (measured in volts)?

Flip the magnet around so the North pole is facing out

Move the magnet back and forth

Take the magnet out

Add more coils around the paper cylinder

12.

Electromagnetic induction is taking place in this experiment. How much electricity is being produced?

-10 Volts

10 Volts

100 Volts

This question cannot be answered based on this image

13.

How could the experimenter increase the amount of electricity being induced by this experiment?

Increase the number of coils

Decrease the number of coils

Flip the magnet around

Nothing, the amount of electricity cannot be increased

14.

What is one way to increase the current in a wire?

Decrease the number of coils

Increase the number of coils

Move the magnet slower

Take the wire off of the magnet

15.

What benefit is gained by the addition of the iron core in an electromagnet?

It makes a strong magnet weaker

It makes a weak magnet stronger

There is no benefit at all

It lets currents interact with each other

Reset

ELECTROMAGNETIC INDUCTION

Total questions: 15

Worksheet time: 8mins

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