10th Physics Chapter 6 Exercise Quiz
Physics 10th Class Chapter 6 Electromagnetism Exercise Quiz Online-Topper.Pk
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Below are some important MCQs with answers for Chapter 6: Electromagnetism.
(I.) Which statement is true about the magnetic poles? (Chapter 6)
a
Unlike poles repel
b
Like poles attract
c
Magnetic poles do not affect each other
d
A single magnetic pole does not exist
(II.) What is the direction of the magnetic field lines inside a bar magnet? (Chapter 6)
a
From north pole to south pole
b
From south pole to north pole
c
From side to side
d
There are no magnetic field lines
(III.) The presence of a magnetic field can be detected by a: (Chapter 6)
a
Small mass
b
Stationary positive charge
c
Stationary negative charge
d
Magnetic compass
(IV.) If the current in a wire, which is placed perpendicular to a magnetic field, increases, the force on the wire: (Chapter 6)
a
Increases
b
Decreases
c
Remains the same
d
Will be zero
(V.) A D.C motor converts: (Chapter 6)
a
Mechanical energy into electrical energy
b
Mechanical energy into chemical energy
c
Electrical energy into mechanical energy
d
Electrical energy into chemical energy
(VI.) Which part of a D.C motor reverses the direction of current through the coil every half-cycle? (Chapter 6)
a
The armature
b
The commutator
c
The brushes
d
The slip rings
(VII.) The direction of induced e.m.f. in a circuit is in accordance with conservation of: (Chapter 6)
a
Mass
b
Charge
c
Momentum
d
Energy
(VIII.)The step-up transformer: (Chapter 6)
a
Increases the input current
b
Increases the input voltage
c
Has more turns in the primary coil
d
Has less turns in the secondary coil
(IX.) The turn ratio of a transformer is 10. It means: (Chapter 6)
a
Is = 10 Ip
b
Ns = Np / 10
c
Ns = 10 Np
d
Vs = Vp / 10