Asolenoid contains 705 coils of very thin wire evenly wrapped over a length of 15.5 cm. each coil is 2.50 cm in diameter. if this solenoid carries a current of 6.5 a, what is the magnetic field at its center?

The magnetic field at its center is 0.037 T.

Explanation:

Given that,

Number of coil = 705

Length = 15.5 cm

Diameter = 2.50 cm

Current = 6.5 A

We need to calculate the  magnetic field at its center of solenoid

Using formula of magnetic field

Where, I = current

L = length

N = number of coil

Put the value into the formula

Hence, The magnetic field at its center is 0.037 T.

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