Question

10. According to Ohm's law, across a resistor with constant resistance, what
happens to the current across it when the voltage applied is halved?
A. halved
B. doubled
C. quadrupled
D. remains the same​

Answer 1

Answer:

The answer is option B : Doubled

Explanation:

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Answer 2

According to Ohm's law, across a resistor with constant resistance, when the voltage applied is halved, the current across it will be A. halved.

What is Ohm's law?

• Ohms's law basically displays the relationship between the electric current flowing through a conductor and the voltage or potential difference established in it.
• It is assumed in this law that resistance remains constant.

Statement of Ohm's law-

"In a conductor of a definite resistance, the current flowing through it is directly proportional to the potential difference across it."

Formula of Ohm's law-

$V\alpha I$

In the given question,

• It is stated that the resistor has constant resistance.
• After that, the current across it is halved.
• From the above formula, the voltage will also be halved as it is directly proportional to the electric current.