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Electromagnetic Induction and Alternating Current

Flux Linkage

Quick practice

Question 1 of 5

A rod with circular cross-section area 2 cm^2 and

length 40 cm is wound uniformly with 400 turns of

an insulated wire. If a current of 0.4 A flows in the

wire windings, the total magnetic flux produced

inside windings is 4 \pi \times 10^{-6} \mathrm{~Wb}. The relative

permeability of the rod is

(Given : Permeability of vacuum \mu_0=4 \pi \times 10^{-7} \mathrm{NA}^{-2})

A

125

B

12.5

C

\frac{32}{5}

D

\frac{5}{16}

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