Physics Current Electricity UHS 2024
PMDC Verified Question 15 of 112
The magnitude of the current in metals is proportional to the potential difference cross it as long as temperature of conductor is kept constant is known as:
A
Joule's law
B
Gauss law
C
Ohm's law
D
Ampere's law
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Ohm's law
Concept:

The foundational law of basic electrical circuits connects Voltage, Current, and Resistance.

Solution:

  • The precise statement: "Current is directly proportional to voltage (\( I \propto V \)) provided physical state and temperature are constant" is the exact definition of Ohm's law.


Why other options are incorrect:

  • Opt A: Joule's Law deals with power and heat (\( P = I^2R \)).


  • Opt B & D: Deals with electrostatics and magnetism, not circuit resistance.

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