How will the current through a conductor

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Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

How will the current through a conductor vary if the potential difference across its ends is made to double its value?

Options:

The current will be 4 times

The current will be half

the current will double

The current will remain the same

Correct Answer:

the current will double

Explanation:

By Ohm's Law : V = RI

Also, I = neAv_d and v_d = eEt/m

As V ↑, E ↑ and v_d ↑ ∴ I ↑