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KARTIK KHUNGER

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· 1 Months ago

EXPLAIN PLEASE

Question:

The flux through each turn of a 100-turn coil is (t3 – 2t) m Wb, where ‘t’ is in seconds. Find the magnitude of the induced emf at t = 2 s.

Options:
A)

1 V

B)

0.8 V

C)

0.4 V

D)

0.2 V

Solution:

Ans:(a)

e =  Ndfdt    = 100 × (3t2 – 2) × 10-3

At t = 2 = 100 (3 × 4 – 2) × 10-3 = 1 V

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