Question

The magnetic flux linked with a coil changes to 12 wb to 10 wb in 0.02 sec.calculate the ed inducted
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Answer 1

Answer:

Induced emf = 100 V

Explanation:

Formula of induced emf:

$\boxed{\rm \epsilon = - \dfrac{\Delta {\phi}_{B}}{\Delta t}}$

According to the question,

Initial magnetic flux = 12 Wb

Final magnetic flux = 10 Wb

Time interval = 0.02 sec

By substituting the values in the formula, we get:

$\rm \epsilon = - \dfrac{(10 - 12)}{0.02} \\\\ \rm = - \dfrac{(-2)}{0.02} \\\\ \rm = \dfrac{2}{0.02} \\\\ \rm = 100 \ V$