If a current of 10 A changes in one second throught a coil, and the induced emf is 10 V, then the self-inductance of the coil is
If a current of 10 A changes in one second throught a coil, and the induced emf is 10 V, then the self-inductance of the coil is
A. `(2)/(5)H`
B. `(4)/(5)H`
C. `(5)/(4)H`
D. 1/2 H
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Correct Answer - D
Self-inductance of coil,
`|e|=L(di)/(dt)`
`therefore" "20=Lxx(10)/(1)`
`therefore"Self inductance,"L=1/2H`
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