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CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
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Four charges $$-$$q, $$-$$q, +q and +q are placed at the corners of a square of side 2 L is shown in figure. The electric potential at point A midway between the two charges +q and +q is -

CBSE 12th Physics (Term 1) Paper 2021-22 Physics - Electrostatics Question 12 English
A
$${1 \over {4\pi { \in _0}}}{{2q} \over L}\left( {1 - {1 \over {\sqrt 5 }}} \right)$$
B
$${1 \over {4\pi { \in _0}}}{{2q} \over L}\left( {1 + {1 \over {\sqrt 5 }}} \right)$$
C
$${1 \over {4\pi { \in _0}}}{q \over {2L}}\left( {1 - {1 \over {\sqrt 5 }}} \right)$$
D
zero
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CBSE 12th Physics (Term 1) Paper 2021-22 (14)
Class 12 Subjects
Physics
Electromagnetism
ElectrostaticsCurrent ElectricityCapacitorMagnetic Effect of CurrentMagnetic Properties of MatterElectromagnetic InductionAlternating CurrentElectromagnetic Waves
Optics
Geometrical OpticsWave Optics
Modern Physics
Atoms and NucleiDual Nature of RadiationSemiconductor
Chemistry
Physical Chemistry
SolutionsElectrochemistryChemical Kinetics
Inorganic Chemistry
d and f Block ElementsCoordination Compounds
Organic Chemistry
Haloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomolecules
Mathematics
Relations and Functions
Relations and FunctionsInverse Trigonometric Function
Calculus
Continuity and DifferentiabilityApplication of DerivativesIndefinite IntegrationDefinite IntegrationApplication of IntegrationDifferential Equations
Algebra
MatricesDeterminantsProbabilityVector AlgebraThree Dimensional Geometry