First slide

Displacement current

Question

The magnetic field, between the plates of radius 12 cm separated by distance of 4 mm of a parallel plate capacitor of capacitance 100 pF, along the axis of plates having conduction current of 0.15 A is

Moderate

A

zero
B

1.5 T
C

15 T
D

0.15 T

Solution

$B = \frac{μ_{0} i_{d} . r}{2 {πR}^{2}}$
Magnetic field between the plates along the axis is zero ( $∵$ r = 0)

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