Two circular coils 1 and 2 are made of tge same wire

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Devanshi · Answer 1 · 2019-08-02T22:11:38+0000

Answer: 4

Explanation:

Let r₁ and r₂ are the radius of coil 1 & 2. If B₁ and B₂ are magnetic induction at their centre, then

Since B₁ = B₂ ; and r₁ = 2r₂ therefore I₁ = 2I₂ Again if R₁ and R₂ are resistance of the coil 1 and 2 then R₁ = 2R₂ (as R ∝ length = 2πr) and if V₁ and V₂ are the potential difference across them respectively, then