Name the physical quantity whose unit is Ohm(Q).

Correct option is C

The correct answer is (c) Resistance.
· The unit Ohm (Ω) is used to measure resistance, which quantifies how much a material opposes the flow of electric current in a circuit.
Explanation of Other Options:
· Charge : The unit of electric charge is the Coulomb (C).
· Potential difference : The unit of potential difference is the Volt (V).
· Current : The unit of electric current is the Ampere (A).
Key Formula: Resistance is related to voltage and current by Ohm's Law:
R=
Where:
· R is resistance (Ohms, Ω),
· V is potential difference (Volts, V),
· I is current (Amperes, A).