Single Answer MCQ
Q-00004451
In a circuit, if the potential difference across a resistor is doubled, what happens to the current, assuming resistance remains constant?
1
It doubles
2
It halves
3
It remains the same
4
It quadruples
Answer and Solution
Answer
A. It doubles
Solution:
According to Ohm's law (V = IR), if V is doubled and R remains constant, the current I must also double.
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