Question

Consider a closely wound 1000 turn coil, having radius 1m. If a current of 10A passes
through the coil, calculate magnitude of magnetic induction at the centre of it.​

Answer 1

Given info : Consider a closely wound 1000 coil, having radius 1 m. if the current of 10 A passes through the coil,

To find : the magnitude of magnetic induction (field) at the centre of it is...

solution : no of turns , N = 1000

current passing through the coil , i = 10 A

radius of coil, r = 1 m

using formula,

magnetic field at the centre of coil is given by, B = μ₀iN/2r

where μ₀ = 4π × 10^-7 H/m ,

so B = (4π × 10^-7 × 10 × 1000)/(2 × 1)

= (4 × 3.14 × 10¯³)/2

= 6.28 × 10¯³ T

Therefore the magnetic induction (field) at the centre of coil is 6.28 × 10¯³ T.

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