Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies

Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies with time t (in sec) as φ=5t²-4t+1. The induced e.m.f. in the circuit at 0.2 sec is

Options

(a) 0.4 volt
(b) 2.0 volt
(c) (-0.4 volt)
(d) (-2.0 volt)

Correct Answer:

2.0 volt

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. Zener diode is used
  2. If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
  3. Which of the following particles will have minimum frequency of revolution
  4. In Young’s experiment, the third bright band for light of wavelength 6000Å
  5. A concave lens of focal length f forms an image which is 1/3 times the size