497322
Description
Quiz by tatemae.honne, updated more than 1 year ago
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Question 1
Question
Magnetic Field Lines flow in which direction?
Answer
-
From the north pole to the south pole of a magnet.
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From the south pole to the north pole of a magnet
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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?
Answer
-
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?
Answer
-
Tesla
-
Weber
-
Ampere
-
Volt
Question 4
Question
What is the formula for the force on a current-carrying conductor in a magnetic field?
Answer
-
F = ILB
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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.
Answer
- True
- False
Question 6
Question
Which of the following electrical devices use the phenomenon of mutual induction?
Answer
-
Transformer
-
Inductor
-
Semiconductor
Question 7
Question
What energy conversion takes place in a generator?
Answer
-
Electrical to mechanical
-
Mechanical to heat
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Mechanical to electrical
Question 8
Question
Which of the following objects use inductors?
Answer
-
Mobile phone chargers
-
Televisions
-
Dimmer switches in lighting
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Power stations
-
Radios
Question 9
Question
Alternating current is a current whose direction reverses constantly.
Answer
- True
- False
Question 10
Question
The left hand rule is used in which scenario?
Answer
-
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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