Question

If potential difference applied across a wire is doubled then by how much percent the current passing through it will increase

Answer 1

Answer:

DOUBLED

Explanation:

The current is directly proportional to the voltage and inversely proportional to the resistance. Any alteration in the voltage will result in the same alteration of the current. So doubling or tripling the voltage will cause the current to be doubled.

Answer 2

Answer:

Hundred percent.

Explanation:

Let me introduce the Ohm's law, it states that the current flowing through a wire is directly proportional to the potential difference applied across it.

i.e v ∝ i.

In the given situation the potential difference across wire is doubled, so current through it must be doubled.

Hence the current will increase by 100%.

( This is because, let initial current be i then the final would be 2i.

So increase in current is 2i-i = i.

Therefore required percentage is i/i x 100 = 100%)