AP EAMCET202124 Aug 2021Evening ShiftPhysicsElectromagnetic InductionActual
A coil having 500 square loops each of side 10 cm is placed normal to a magnetic flux which increases at a rate of 1 Ts ⁻¹ . The induced emf is
Options
- A0.1 ~V
- B0.5 ~V
- C1 ~V
- D5 ~V
Correct answer
D. 5 ~V
Step-by-step solution
Given that, number of loops, N=500 Side of square, a=10 ~cm =0.1 ~m Rate of increase of magnetic field, d B d t =1 ~T / s Now, induced emf, =-N d d t =-N d d t (B A)=-N A d B d t =-N a^2 d B d t [ . Area of square .A=a^2 ] Substituting the values, we get =-500 (0.1)^2 1=-5 ~V Magnitude, | |=5 ~V