Question

A coil has 1,000 turns and $500 \,cm^2$ as its area, The plane of the coil is placed at right angles a magnetic induction field of $2 \times 10^{-5}\,web/m^2$ The coil is rotated through 180$^\circ$ in 0:2 seconds. The average emf induced in the coil, in milli volts, is:

• A. 5
• B. 10
• C. 15
• D. 20

Answer 1

Answer: (B)

10

Answer 2

$e = \frac{2NBA}{t}$