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Electromagnetic Induction — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElectromagnetic Induction1 Mark
MCQ
Two identical circular loops of metal wire are lying on a table without touching each other. Loop- $A$ carries a current which increases with time. In response, the loop- $B$(CM is the centre of mass)
  • A
    Remains stationary
  • B
    Is attracted by the loop- $A$
  • ✓
    Is repelled by the loop- $A$
  • D
    Rotates about its $\mathrm{CM}$, with $\mathrm{CM}$ fixed
✓

Answer

Correct option: C.
Is repelled by the loop- $A$
If the current increases with time in loop $A$, then magnetic flux in $B$ will increase. According to Lenz's law, loop $-B$ is repelled by loop $-A$.

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