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NEETPhysicsElectromagnetic Induction

The arm P Q of a rectangular conductor is moving from x = 0 to x = 2 b outwards and then inwards from x = 2 b to x = 0 as shown in the figure. A uniform magnetic field perpendicular to the plane is acting from x = 0 to x = b . Identify the graph showing the variation of different quantities with distance:

Options

  1. AA —Flux, B —Power dissipated, C —EMF
  2. BA —Power dissipated, B —Flux, C — E M F
  3. CA —Flux, B — E M F , C —Power dissipated
  4. DA — E M F , B —Power dissipated, C —Flux

Correct answer

C. A —Flux, B — E M F , C —Power dissipated

Step-by-step solution

As rod moves in field area increases upto x = b , then field is absent and again flux is generated on return journey from x = b to x = 0 . Thus plot A for flux. ⇒ e = - d ϕ d t ⇒ curve B for emf ⇒ Power dissipated = v i ⇒ curve C for power dissipated

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