Question

The current in a certain resistor is 0.60 A when it is connected to a potential difference of 373 V. What is the current in this same resistor if the operating potential difference is 139 V? Answer in units of A.

Answer 1

As we know that resistance of the resistor will remain same while connecting across different batteries

So here we will say by ohm's law

`R = (V)/(i)`

here we know that

`i = 0.60 A`

`V = 373 Volts`

now we have

`R = (373)/(0.60) = 621.67 ohm`

now we have

another voltage as V = 139 volts

now we have current

`i = (V)/(R) = (139)/(621.67)`

`i = 0.22 A`

so final current is 0.22 A