question_answer

Choose the correct combination of statements from the following.

I. Fuses are inserted in electric circuits of all buildings.

ii. There is a maximum limit of the current which can safely flow through the electric circuits.

iii. There is a minimum limit of the current which            can safely flow through the electric circuits.

iv. If a proper fuse is inserted in a circuit, it will blow off, if current exceeds the safe limit.

v. A fuse works on the principle of magnetic effect of current.

A) i, ii, iii and v

B) i, iii, iv and v

C) ii, iii, iv and v    

D) i, ii and iv

E) None of these