What will happen when these magnets are brought close together?

Both magnets will turn to the left

Both magnets will turn to the right

What energy transformation takes place in a battery powered fan that is spinning?

chemical to electrical to kinetic

kinetic to chemical to electrical

electrical to kinetic to chemical

A student moves a magnet into a coil of wire as shown in the diagram. The coil of wire is connected to a sensitive ammeter. How to increase the reading of ammeter??

increasing the number of turns on the coil

increasing the speed of the magnet

increasing the strength of the magnet

A circular conducting loop is in a region of magnetic field B directed out of the page, as shown below. The magnitude of the magnetic field is decreasing. The direction of the induced current in the loop is

Undefined because the current is zero

Impossible to determine without knowing the rate of change of field

According to Lenz’s law the direction of an induced current in a conductor will be that which tends to produce which of the following effects?

oppose the effect which produces it

enhance the effect which produces it

produce a greater heating effect

13.7 Based on this picture, which side will have a higher voltage?

Both sides have the same voltage

Faraday's Law states that the induced emf is proportional to Hide answers

the rate of change in the flux of the coil

the cross sectional area of the coil

13.2 If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil with twice the number of loops,

c. twice as much voltage is induced.

a. one-half as much voltage is induced.

b. the same voltage is induced.

d. four times as much voltage is induced.

Physics SPM : Electromagnetism: Topic 3.1 - 3.3

Authored by AMINUDDIN BAHARUDDI

Physics

4th - 5th Grade

NGSS covered

Used 105+ times

Physics SPM : Electromagnetism: Topic 3.1 - 3.3

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MULTIPLE CHOICE QUESTION

5 sec • 1 pt

What is this device?

electromagnet

generator

electric motor

Produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.

generator

electric motor

electromagnet

Huge wheels that rotate when pushed by water, wind or steam.

turbines

leads

magnets

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Transforms mechanical energy to electrical energy.

generator

electric motor

electromagnet

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Contains an electromagnet that rotates between the poles of a magnet.

generator

electric motor

electromagnet

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Magnetism created by an electric current

electricity

electromagnetism

wind energy

____________ allows electricity to flow.

A conductor

An insulator

A magnet

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Physics SPM : Electromagnetism: Topic 3.1 - 3.3

What is this device?

Produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.

Huge wheels that rotate when pushed by water, wind or steam.

Transforms mechanical energy to electrical energy.

Contains an electromagnet that rotates between the poles of a magnet.

Magnetism created by an electric current

____________ allows electricity to flow.

To complete a circuit the switch must be

What will happen when these magnets are brought close together?

Magnets have a north and a south ___________

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