Question

"If the potential difference across a resistor is doubled: "? "A. only the current is doubled B. only the current is halved C. only the resistance is doubled D. only the resistance is halved,, the answer is A, why?

Answer 1

Answer:

option A is right

Explanation:

• potential difference is directly proportional to the amount of current flow.
• V ~ I

so now, when the potential difference will get doubled, the amount of current will also get doubled!!❤

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Answer 2

If the potential difference across a resistor is doubled then, only the current is doubled (Option A).

we know,

By Ohms law,

V = I R

now if the voltage is doubled and considering the resistance as constant then the current will be doubled as both voltage and current are directly proportional to each other.

Resistance can not change its value as it is a fixed quantity and is different for different resistors.