Questions
A sphere of radius 1 cm has potential of 8000 V, then energy density near its surface will be
detailed solution
Correct option is D
Energy density ue=12ε0E2=12×8.86×10−12×Vr2= 2.83J/m3Talk to our academic expert!
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Four identical charges each are placed, one at each corner of a square of side 2m. How much external energy is required to bring another charge of from infinity to the centre of the square
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