Objective Questions

Short notes

Objective questions (Answers are given below)

  1. Relative permeability of vacuum is
    (a) 4π × 10−7 H/m (b) 1 H/m
    (c) 1 (d) 1/4 π
  2. Unit of magnetic flux is
    (a) weber (b) ampere-turn
    (c) tesla (d) coulomb
  3. Point out the WRONG statement.
    The magnetising force at the centre of a
    circular coil varies.
    (a) directly as the number of its turns
    (b) directly as the current

( c) directly as its radius
(d) inversely as its radius

1.c 2. a 3. a

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