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A resistor is connected to a battery of ...

A resistor is connected to a battery of emf 10 V and internal resistance `0.3 Omega`. What is the resistance of the resistor to be inserted in the circuit for the circuit current 1.2A?

Text Solution

Verified by Experts

Here, `epsilon = 10 v, r=0.3Omega`,
`R = ?, I=1.2 A`
Current, `I=epsilon/R+r`
or `R= epsilon/I - r=10/1.2 - 0.3 = 8.3 - 0.3 = 8.0 Omega`
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