The condition for the validity under Ohm's law is that?
Correct answer: A. Resistance must be uniform
- A. Resistance must be uniform
- B. Current should be proportional to the size of the resistance
- C. Resistance must be wire wound type
- D. Temperature at the positive end should be more than the temperature at negative end
Explanation
Ohm's law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance and directly proportional to the resistance of the circuit. This is given by I∝V or V∝I IV=Constant. The formula for Ohm's law is V=IR.It is imperative for the temperature to be constant and the "resistance to be uniform" for ohm's law to be valid. Hence option A.
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Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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