Question

6. A metal rod 10 cm long is rotated about an axis
normal to the rod and passing through one of its
ends. The rod completes 5 rotations per second and a
uniform magnetic induction of 0.01 T is applied parallel
to the axis of rotation. Find (i) the emf between the
ends of the rod (ii) what the induced emf would be if
(3 marks
the rod were twice as long.
(Ans. 1.57 mV, 6.28 mV)
7. A fan having four blades, each 20 cm long, rotat
tal axis in the Nor​

Answer 1

Answer:

6. A metal rod 10 cm long is rotated about an axis

normal to the rod and passing through one of its

ends. The rod completes 5 rotations per second and a

uniform magnetic induction of 0.01 T is applied parallel

to the axis of rotation. Find (i) the emf between the

ends of the rod (ii) what the induced emf would be if

(3 marks

the rod were twice as long.

(Ans. 1.57 mV, 6.28 mV)

7. A fan having four blades, each 20 cm long, rotat

tal axis in the Nor