1000+ Current Electricity Questions and Answers Pdf - 1

Question: 1

For testing appliances, the wattage of test lamp should be

(A) low

(B) high

(C) very low

(D) any value

Question: 2

The filament of an electric bulb is made of

(A) tungsten

(B) nickel

(C) aluminium

(D) carbon

Question: 3

All good conductors have high

(A) thermal conductivity

(B) reluctance

(C) resistance

(D) conductance

Question: 4

The resistance of a conductor varies inversely as

(A) area of cross section

(B) resistivity

(C) temperature

(D) length

Question: 5

The substances which have a large number of free electrons and offer a low resistance are called

(A) conductors

(B) semi-conductors

(C) inductors

(D) insulators