The electric field of a plane electromagnetic wave varies with time of amplitude 2Vm-1 propagating along z-axis. The average energy density of the magnetic field is (in J m-3)
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a
13.29×10-12
b
8.86×10-12
c
17.72×10-12
d
4.43×10-12
answer is B.
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Detailed Solution
E=2vm-1 12ε0E022=uE &uB are same128.85×10-12222×B8.85×10-12J/m3
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The electric field of a plane electromagnetic wave varies with time of amplitude 2Vm-1 propagating along z-axis. The average energy density of the magnetic field is (in J m-3)