# Electromagnetism: Quiz

### Description

This quiz covers the topics of magnetic fields, magnetic flux density, magnetic flux, forces in magnetic fields and electromagnetic induction. It tests material learnt in the mind map on electromagnetism, and associated notes and mind maps.
Quiz by tatemae.honne, updated more than 1 year ago More Less
 Created by alex.examtime9373 almost 10 years ago Copied by tatemae.honne almost 10 years ago
1542
5

## Resource summary

### Question 1

Question
Magnetic Field Lines flow in which direction?
• From the north pole to the south pole of a magnet.
• From the south pole to the north pole of a magnet
• From the north pole of a magnet to a north pole of another magnet

### Question 2

Question
What is measured by the Magnetic Flux Density?
• Size of the magnetic field
• Strength of the magnetic field
• Current flowing through the magnetic field

### Question 3

Question
What is the unit of magnetic flux?
• Tesla
• Weber
• Ampere
• Volt

### Question 4

Question
What is the formula for the force on a current-carrying conductor in a magnetic field?
• F = ILB
• F = qvB
• F = ΦB

### Question 5

Question
Lenz's law states that the magnitude of an emf induced by a changing magnetic flux is proportional to the rate of change of flux linking a circuit.
• True
• False

### Question 6

Question
Which of the following electrical devices use the phenomenon of mutual induction?
• Transformer
• Inductor
• Semiconductor

### Question 7

Question
What energy conversion takes place in a generator?
• Electrical to mechanical
• Mechanical to heat
• Mechanical to electrical

### Question 8

Question
Which of the following objects use inductors?
• Mobile phone chargers
• Televisions
• Dimmer switches in lighting
• Power stations

### Question 9

Question
Alternating current is a current whose direction reverses constantly.
• True
• False

### Question 10

Question
The left hand rule is used in which scenario?
• Direction of force on a current-carrying conductor in a magnetic field
• Direction of magnetic field due to current
• Magnitude of force on a current-carrying conductor in a magnetic field

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