In a spark plug which is connected to the secondary coil of transformer an emf 40000 V is induced when in primary coil current changes from 4 A to 0 in 10 - s- The self inductance of secondary coil is 1000 H- The minimum value of self inductance of primary coil is 10- x- Then find x-

E=M.di/dt Using values M = 0.1 Now, M =√(L_1 L_2) L_1=10^ 5H ...

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Standard XII

Physics

Inductive Reactance

In a spark pl...

Question

In a spark plug which is connected to the secondary coil of transformer an emf 40000V is induced when in primary coil current changes from 4A to 0 in $10 μ s$ . The self inductance of secondary coil is 1000H. The minimum value of self inductance of primary coil is $10^{- x}$ . Then find x.___

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Solution

E=M. $\frac{d i}{d t}$
Using values M = 0.1
Now, $M = \sqrt{L_{1} L_{2}}$
$L_{1} = 10^{- 5} H$

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In a spark plug which is connected to the secondary coil of transformer an emf 40000V is induced when in primary coil current changes from 4A to 0 in 10μs. The self inductance of secondary coil is 1000H. The minimum value of self inductance of primary coil is 10−x. Then find x.___

E=M.didt Using values M = 0.1 Now, M=√L1L2 L1=10−5H

In a spark plug which is connected to the secondary coil of transformer an emf 40000V is induced when in primary coil current changes from 4A to 0 in $10 μ s$ . The self inductance of secondary coil is 1000H. The minimum value of self inductance of primary coil is $10^{- x}$ . Then find x.___

E=M. $\frac{d i}{d t}$
Using values M = 0.1
Now, $M = \sqrt{L_{1} L_{2}}$
$L_{1} = 10^{- 5} H$