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=−dtdϕ⇒ curve B for emf
⇒ Power dissipated =vi⇒ curve C for power dissipated
JEE Main 2021 — Physics Electromagnetism
2021mcqmedium
The arm PQ of a rectangular conductor is moving from x=0 to x=2b outwards and then inwards from x=2b 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:
Official previous-year question
Held on 20 Jul 2021 · Verified 6 Jul 2026.
Options
- A
A—Flux, B—Power dissipated, C—EMF
- B
A—Power dissipated, B—Flux, C—EMF
- C
A—Flux, B—EMF, C—Power dissipated
- D
A—EMF, B—Power dissipated, C—Flux
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