Magnetism & Electromagnetism Objective Questions & Answers - 2

Question: 6

In the left hand rule, forefinger always represents

(A) direction of force on the conductor

(B) magnetic field

(C) current

(D) voltage

Question: 7

Paramagnetic materials have relative permeability

(A) equal to that ferromagnetic materials

(B) slightly more than unity

(C) equal to unity

(D) slightly less than unity

Question: 8

Fleming’s left hand rule is used to find

(A) polarity of a magnetic pole

(B) direction of force on a current carrying conductor in a magnetic field

(C) direction of flux in a solenoid

(D) direction of magnetic field due to current carrying conductor

Question: 9

Aluminium and platinum are _____ materials.

(A) insulating

(B) paramagnetic

(C) diamagnetic

(D) ferromagnetic

Question: 10

A permeable substance is one

(A) through which the magnetic lines of force can pass very easily

(B) which is a strong magnet

(C) which is a good conductor

(D) which is a bad conductor