Calculate the displacement current density when the electric flux density is 20sin 0.5t.

A)
10sin 0.5t
B)
10cos 0.5t
C)
20sin 2t
D)
20cos 2t

Correct Answer : Option (B) :   10cos 0.5t

Explanation : The displacement current density is given by, Jd = dD/dt.
Jd = d(20sin 0.5t)/dt = 20cos 0.5t (0.5) = 10cos 0.5t.

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