Magnetism & Electromagnetism MCQ Questions Answers – Electrical Engineering
1)The magnetic material used in permanent magnets is
a) iron
b) soft steel
c) nickel
d) hardened steel
2) The relative permeability of iron is of the order of
a) zero
b) 104
c) 1
d) 10-4
3) Which of the following is more suitable for the core of an electromagnet?
a) soft iron
b) air
c) steel
d) tungsten steel
4) Magnetic flux passes more readily through
a) air
b) wood
c) vacuum
d) iron
5) The magnetic material used in temporary magnets is
a) hardened steel
b) cobalt steel
c) soft iron
d) tungsten steel
6) Magnetic flux density is a
a) vector quantity
b) scalar quantity
c) phasor
d) none of the above
7) When a charged particle moves through a magnetic field, it suffers a change in
a) direction
b) speed
c) energy
d) no change
8) The resistance of an ideal ammeter is
a) zero
b) high
c) infinite
d) 10
9) The resistance of an ideal voltmeter is
a) zero
b) infinite
c) very low
d) data incomplete
10) In the above question, the momentum of the particle will
a) be zero
b) change
c) not change
d) none of the above