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Dimensions of resistance in an electrical circuit, in terms of dimension of mass M, of length L, of time T and of current I would be
Options
(a) [ML²T⁻²]
(b) [ML²T⁻¹I⁻¹]
(c) [ML²T⁻³I⁻²]
(d) [ML²T⁻³I⁻¹]
Correct Answer:
[ML²T⁻³I⁻²]
Explanation:
According to Ohm’s law,
V=RI or R = V/I
Dimensions of V=W/q = [ML²T⁻²]/[IT]
R=[ML²T⁻²/IT]/[I] =[ML²T⁻³I⁻²]
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Topics: Physical World and Measurement
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A circular disc of radius R and thickness R/6 has moment of inertia I about an axis
- A galvanometer having internal resistance 10Ω requires 0.01 A for a full scale
- The rate of increase of thermo-e.m.f. with temperature at the neutral temperature
- A body of mass M hits normally a rigid wall with velocity V and bounces back
- A car moving with a speed of 50 kmh⁻¹ can be stopped by brakes after at least 6 m
Topics: Physical World and Measurement (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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