Question

what will be the current a resistor if the potential diffence across it is doubled and the resistance is half​

Answer 1

Explanation:

Resistance(R)=Potential Difference(V)/Current(I)

Hence,I=R/V I1/I2=R1R2/V1V2

let R1=1 and V1=1,I1=1

R2=0.5 and V2=2,I2=to find(let it be x)

1/x=0.5/2,1/x=0.25=25/100

x=100/25=4

therefore,current through the resistor is original current*4

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