A coil and a magnet moves with their constant speed 5 m/sec. and 3 m/sec. respectively, towards each other, then induced emf in coil is 16 mV. If both are moves in same direction, find induced emf in coil ?

Engineering

Physics

Ohm Law and Current Basics

Question

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In first case

v = 5 m/s, v' = 3 m/s

relative speed = 8 m/s
The induced EMf is directly proportional to relative velocity
In second case

Relative speed = 5 - 3 = 2 m/s
let the met induced is

$\frac{e}{16} = \frac{2}{8}$

∴ e = 4mV

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