The coefficient of mutual inductance- when magnetic flux changes by 2- 10 -2 Wb and current changes by 0-01 A is -

The correct option is D 2 henryWe know that ϕ =Mi dϕ =Mdi M= dϕ #160;/ di = 2× 10 ^ 2 / 1× 10 ^ 2 =2 henry ...

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Standard XII

Physics

Magnetic Field

The coefficie...

Question

The coefficient of mutual inductance, when magnetic flux changes by $2 \times 10^{- 2} W b$ and current changes by 0.01 A is :

8 henry

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4 henry

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3 henry

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2 henry

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Solution

The correct option is D 2 henry
We know that

$ϕ = M i$

$d ϕ = M d i$

$M = \frac{d ϕ}{d i} = \frac{2 \times 10^{- 2}}{1 \times 10^{- 2}} = 2$ henry

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The coefficient of mutual inductance, when magnetic flux changes by 2×10−2Wb and current changes by 0.01 A is :

The correct option is D 2 henryWe know thatϕ=Midϕ=MdiM=dϕdi=2×10−21×10−2=2 henry

The coefficient of mutual inductance, when magnetic flux changes by $2 \times 10^{- 2} W b$ and current changes by 0.01 A is :

The correct option is D 2 henry
We know that

$ϕ = M i$

$d ϕ = M d i$

$M = \frac{d ϕ}{d i} = \frac{2 \times 10^{- 2}}{1 \times 10^{- 2}} = 2$ henry