Electronics - Resistance and Power - Discussion

20. 

What happens to current and resistance if the voltage doubles?

[A]. Current doubles and resistance doubles.
[B]. Current doubles and resistance is halved.
[C]. Current remains the same and resistance doubles.
[D]. Current doubles and resistance remains the same.

Answer: Option D

Explanation:

No answer description available for this question.

Yogesh said: (Nov 12, 2011)  
V=IR
I=V/R
I=2V/2R-->V/R
Current remains same while in our case resistance is doubles.

Hariom said: (Nov 8, 2013)  
Here R constant but current is variable so current double.

Manju said: (Mar 18, 2014)  
V=IR.
Multiply 2 both side.

2V = 2IR.

Voltage and current varies not resistance.

So,
2V =(2I)R.

Tapasree Ghosh said: (Jul 8, 2015)  
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: (Jul 31, 2016)  
Golsh, exactly true.

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