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The current I through a rod of a certain...

The current I through a rod of a certain metallic oxide is given by `I = 0.2 V^(1//2)` , where V is the potential difference cross it. The rod is connected in series with a resistance to a 6 volt battery of negligible internal resistance. What value should the series resistance have so that :
A) the current in the circuit is 0.4 A
B) the power dissipated in the rod is twice that dissipated in the resistance.

A

`10 Omega, 10 Omega`

B

`10 Omega, 5 Omega`

C

`5 Omega, 10 Omega`

D

`5 Omega, 5 Omega`

Text Solution

Verified by Experts

The correct Answer is:
D
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