alleryOhm's law says the current through a conductor is directly proportional to what?
AIts outer colour
BIts overall mass
CIts surface shape
DThe voltage across it
Answer & Solution
Correct answer: D. The voltage across it
1. Ohm's law states that current is directly proportional to the potential difference across two points.
2. Resistance is the constant of proportionality, not the quantity the current is proportional to.
3. Colour and mass play no role.
_Source: Wikipedia, Electric current, Ohm's law_
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