GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If doubling the voltage across a resistor doubles the current through the resistor, then
A
The resistor value decreased
B
The resistor value did not change
C
The resistor value increased
D
It is impossible to determine the change in the resistor value
Explanation: 

Detailed explanation-1: -Hence, If doubling the voltage across a resistor doubles the current through the resistor then the resistor value did not change. It remains constant.

Detailed explanation-2: -The current will get doubled. This conforms to Ohm’s law as the current is proportional to the voltage.

Detailed explanation-3: -2. If the voltage across a resistance is doubled, what will happen to the current? Answer: The current will double as well. Explanation: If you look at the equation V= IR, if R stays the same then if you multiple V*2 (double the voltage), you must also double the current for the equation to remain true.

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