Electric displacement density D at any point on the spherical surface of radius r with a charge Q at the center in a medium with dielectric constant ε is:

Electric displacement density D at any point on the spherical surface

1.	Electric displacement density D at any point on the spherical surface of radius r with a charge Q at the center in a medium with dielectric constant ε is:
A.	Q / (4π ε r2)
B.	Q / (4π r2)
C.	(Q / 4π ε r)2
D.	Q / (4π r)2
Answer» C. (Q / 4π ε r)2

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Electric displacement density D at any point on the spherical surface of radius r with a charge Q at the center in a medium with dielectric constant ε is:

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