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

$R = \frac{V}{i}$

here we know that

$i = 0.60 A$

$V = 373 Volts$

now we have

$R = \frac{373}{0.60} = 621.67 ohm$

now we have

another voltage as V = 139 volts

now we have current

$i = \frac{V}{R} = \frac{139}{621.67}$

$i = 0.22 A$

so final current is 0.22 A