AIIMS2019Physics-Electrostatics

AIIMS 2019 Physics Capacitance MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Dimension of Capacitance is

A

M⁻¹L⁻²A²T⁴

B

ML²A⁻²T⁴

C

MLA⁻¹T⁴

D

M⁻¹L⁻¹A²T²

Correct Answer

Option C

Detailed Explanation

The dimension of capacitance (C) is derived from the formula C=QVC = \frac{Q}{V}, where QQ is charge (dimension ATA \cdot T) and VV is voltage (dimension ML2A1T3M \cdot L^{2} \cdot A^{-1} \cdot T^{-3}). Thus, the dimension of capacitance can be calculated as C=ATML2A1T3=M1L1A2T4C = \frac{A \cdot T}{M \cdot L^{2} \cdot A^{-1} \cdot T^{-3}} = M^{-1}L^{-1}A^{2}T^{4}, which corresponds to option C.

Option A is incorrect because it does not match the derived dimensions, while option B has incorrect powers of mass and charge. Option D also does not align with the correct dimensional analysis of capacitance.

Found an issue with this question?