The magnetic field between the plates of a capacitor where r R is given by (where r is the distance from the axis of plates and R is the radius of each plate of capacitor)

Question

The magnetic field between the plates of a capacitor where r > R is given by (where r is the distance from the axis of plates and R is the radius of each plate of capacitor) (A) (μ0 iD/2 π R2) (B) (μ0 iD/2 π R) (C) (μ0 iD/2 π r) (D) zero

Tardigrade Admin · Accepted Answer

Using Ampere circuit law, ∫ B ⋅ d l=μ0 iD or B × 2 π r=α0 iD or B=μ0 iD / 2 π r

Q. The magnetic field between the plates of a capacitor where $r > R$ is given by (where $r$ is the distance from the axis of plates and $R$ is the radius of each plate of capacitor)

$\frac{μ _{0} i _{D}}{2 π R ^{2}}$

$\frac{μ _{0} i _{D}}{2 π R}$

$\frac{μ _{0} i _{D}}{2 π r}$

zero

Using Ampere circuit law,
$\int B \cdot d l = μ_{0} i_{D}$
or $B \times 2 π r = α_{0} i_{D}$
or $B = μ_{0} i_{D} /2 π r$

Q. The magnetic field between the plates of a capacitor where r>R is given by (where r is the distance from the axis of plates and R is the radius of each plate of capacitor)

2πR2μ0​iD​​

2πRμ0​iD​​

2πrμ0​iD​​