Question

the potential difference between the terminals of an electric device is 12v , when it draws a current of 2A from a battery . what current will the device draw if the potential difference is increased to 18v?​

Answer 1

Explanation:

we know v=IR

so in first case V=12 and I =2A

now R = 6 ohm

now in second case V=18

since resistance is not change

so R = 6 ohm

and I = 3A