You have a fixed length of wire and need to design a generator that will produce the greatest peak emf for a given frequency and magnetic field strength. You should use (a) a one-turn square coil, (b) a two-turn square coil, (c) either a one - or a two-turn square coil because both give the same peak emf for a given frequency and magnetic field strength.

Question

Ronin

Physics

21 March, 23:13

You have a fixed length of wire and need to design a generator that will produce the greatest peak emf for a given frequency and magnetic field strength. You should use (a) a one-turn square coil, (b) a two-turn square coil, (c) either a one - or a two-turn square coil because both give the same peak emf for a given frequency and magnetic field strength.

+1

Answers (1)

Know the Answer?

Gael Mcdaniel · Answer 1

flux ∝ n of turns x area

in case of one turn:

area = (L/4) ²

= L² / 16

flux ∝ 1 x L² / 16

∝ L² / 16

In case of two turns

area = (L/8) ²

= L² / 64

Flux ∝ 2 x L² / 64

∝ L² / 32.

Since in 2 turn case flux is less, for maximum peak emf we need one turn square coil.