Question

Potential difference is constant the resistance of circuit is doubled what happens to the current

Answer 1

Answer: According to ohm's law

R =v/I .(1)    

( R=resistance, V=voltage , I =current )

let I' be the current when Resistance become double

2R = V/I'  (2)                          

(V is constant)

dividing equation (2) by (1) 

R/2R= (V/I)/V/I'

1/2=I'/I

I=2I'

I/2=I'

Current through conductor become half.