A rectangular coil of 300 turns has an average area of 25 ~cm 10 ~cm . The coil rotates with a speed of 50 cps in a uniform magnetic field of strength 4 10⁻² ~T about an axis perpendicular to the fiel(d)The peak value of the induced emf (in volt) is

Step-by-step solution

Given, area of rectangular coil, A=25 ~cm 10 ~cm A=250 ~cm ²=0.025 ~m ² No. of turns in the coil, N=300 Magnetic field strength, B=4 10⁻² ~T Peak voltage will be induced when the longer side of the coil moves perpendicular to the magnetic field. =2 v=2 50=100 Induced emf is given by aligned &=N B A &=300 40 10⁻² 0.025 100 =3 V aligned