Question

A conducting square loop having edges of length2.0 cm is rotated through 180^@ about a diagonal in 0.20s. A magnetic field B exists in the region which si perpendicular to the loop in its initial position. If the average induced emf during the rotation is 20 mV, find the magnitude of the magnetic field.

Answer 1

Answer:

if the emf which is average induced one is rotated then the magnitude of magnetic field changes constantly

Answer 2

Answer:

$20 \times {10}^{ - 3} = \frac{b \times 4 \times {10}^{ - 4} \times 2 }{0.2} \\ magnetic \: feild \: = 5 \: tesla$

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