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Physics 10 Chapter 15 - Electromagnetism - 10
1.
When the magnet is moved away from the solenoid, to which side the needle of galvanometer shows deflection?
a) Towards left
b) No deflection
c) The needle breaks down
d) Towards right
2.
The number of magnetic lines of force passing through any surface is called..............?
a) Region of magnetic field
b) Strength of magnetic field
c) Capacity of Magnetic field
d) Value of magnetic field
3.
What is induced in the coil when there is a relative motion between the coil and the magnet?
a) Current
b) E.m.f
c) Potential difference
d) Power
4.
What is the phenomenon called in which an e.m.f. is induced due to the relative motion between the coil and the magnet?
a) Electromagnetic induction
b) Electronics
c) Electromagnetism
d) Conduction
5.
Which of the following law states that: "The value of induced e.m.f. in a circuit is directly proportional to the rate of change of number of magnetic lines of force through it"?
a) Newton's law of electromagnetic induction
b) Faraday's law of electromagnetic induction
c) Pascal's lawof electromagnetic induction
d) Archimedes' law of electromagnetic induction
6.
What is the date of birth of Joseph Henry?
a) 1779
b) 1977
c) 1797
d) 1979
7.
What is the number of magnetic lines of forces passing through any surface?
a) Magnetic Flux Density
b) Electric Flux Density
c) Electric Flux
d) Magnetic Flux
8.
Who observed induced current before Faraday?
a) Joseph Henry
b) Newton
c) Ampere
d) Pascal
9.
Upon which factors, the magnitude of induced e.m.f. in a circuit depends?
a) Amount of current passing through the coil
b) All of these
c) Speed of relative motion of the coil and the magnet
d) Number of turns of the coil
10.
What is the date of death of Joseph Henry?
a) 1787
b) 1878
c) 1887
d) 1778
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