set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

A fuse wire is characterized by

a) High resistance and low melting point

b) Low resistance and high melting point

c) Low resistance and low melting point

d) High resistance and high melting point

Question : 2

Match list I with list II and select the correct answer using the codes given below the lists

a) A – 3 ; B – 1 ; C – 2 ; D – 4

b) A – 3 ; B – 1 ; C – 2 ; D – 4

c) A – 4 ; B – 2 ; C – 3 ; D – 1

d) A – 2 ; B – 4 ; C – 1 ; D – 3

Question : 3

An electric bulb is filled with

a) oxygen and hydrogen

b) ammonia

c) hydrogen

d) nitrogen and argon

Question : 4

Demagnetisation of magnets can be done by

a) magnetising in the opposite direction

b) rough handling

c) heating

d) All of the above

Question : 5

Potential at any point inside a charged hollow sphere

a) is a constant

b) decreases with distance from centre

c) increases with distance

d) is zero

Question : 6

Whenever, current is changed in a coil, an induced e.m.f. is produced in the same coil. This property of the coil is due to

a) self induction

b) eddy currents

c) mutual induction

d) hysteresis