In fig. 30-33, a circular loop of wire in diameter (seen edge-on) is placed with its normal at an angle with the direction of a uniform magnetic field of magnitude . the loop is then rotated such that rotates in a cone about the field direction at the rate ; angle remains unchanged during the process. what is the emf induced in the loop?

there is no induced emf developed

Explanation:

Induced emf developed in the circular loop

ε=

The magnetic flux developed in the coil is

Here angle made by the loop with   the field remaining constant

= 0

hence there is no induced emf developed

false br

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27