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NEET
Exam
NEET
Subject
Physics
Chapter
Electromagnetic Induction

NEET · Physics · Electromagnetic Induction

In a coil of resistance 50Ω , the induced current developed by...

In a coil of resistance 50Ω50Ω, the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux through the coil is

In a coil of resistance 50Ω , the induced current developed by changing magnetic flux through it, is shown in figure as

Options

  1. A10Wb10Wb
  2. B20Wb20Wb
  3. C32Wb32Wb
  4. D40Wb40Wb

Correct answer

D. 40Wb40Wb

Step-by-step solution

According to the given graph (I−t)\left(I - t\right) induced current (I)( I ) is obtained from the slope. Hence, I=1RdϕdtI = \dfrac{1}{R}\dfrac{dϕ}{dt}

⇒dϕ=Idt×R=⇒ dϕ = Idt \times R = area of triangle POS×R=8×0.22×50=40WbPOS \times R = \dfrac{8 \times 0 . 2}{2} \times 50 = 40Wb

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