# Electronics - Resistance and Power - Discussion

Discussion Forum : Resistance and Power - General Questions (Q.No. 20)
20.
What happens to current and resistance if the voltage doubles?
Current doubles and resistance doubles.
Current doubles and resistance is halved.
Current remains the same and resistance doubles.
Current doubles and resistance remains the same.
Explanation:
No answer description is available. Let's discuss.
Discussion:
5 comments Page 1 of 1.

V=IR
I=V/R
I=2V/2R-->V/R
Current remains same while in our case resistance is doubles.

Here R constant but current is variable so current double.

V=IR.
Multiply 2 both side.

2V = 2IR.

Voltage and current varies not resistance.

So,
2V =(2I)R.

TAPASREE GHOSH said:   9 years ago
V = IR.

Now 2*v = 2*I*R.

We know that when resistance is high then small amount of current can pass but when resistance is low then high amount of current can pass.

So here as the current will be multiplied by 2 not R. Thus, option D is correct.

Dalitso paul said:   8 years ago
Golsh, exactly true.