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In the circuit shown in figure, the resi...

In the circuit shown in figure, the resistance R has a value that depends on the current. Specifically R is 20 `Omega` when `i` is zero and the amount of increase in resistance is numerically equal to one-half of the current. What is the value of current I in circuit?

A

15 A

B

`10A`

C

20 A

D

`5A`

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The correct Answer is:
B
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