Physics · Current Electricity
A conductor X has a potential difference of 10 V across it when a current of 2.0 A flows. Another conductor Y has the same potential difference of 10 V but a current of 0.5 A flows through it. Assuming both obey Ohm's law, which statement about their resistances is correct?
- 1X and Y have the same resistance of 5 ohms.
- 2The resistance of X is four times the resistance of Y.
- 3The resistance of Y is four times the resistance of X.✓
- 4The resistance of X is twice the resistance of Y.
Correct answer
The resistance of Y is four times the resistance of X.
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