Question

Question #2dfba

Answer 1

See proof below

Explanation:

We apply Ohm's Law

`U=RI`

Then

`I=U/R`

Let

`I_1=U/R`

It `R` becomes `2R`

Then,

`I_2=U/(2R)`

`I_2=1/2(U/R)`

`I_2=1/2*I_1`

So, when the reistance is doubled, the current is halved.