Question

# A wire has a length of 5.39 × 10-2 m and is used to make a...

A wire has a length of 5.39 × 10-2 m and is used to make a circular coil of one turn. There is a current of 8.14 A in the wire. In the presence of a 2.26-T magnetic field, what is the maximum torque that this coil can experience?

Given that, The length of the wire by which the coil is made:

L=

Now, when the coil is made by this length, the circumference of the coil will be equal to the length of the wire,

So, circumference:

Area of this coil:

m​​​​​​2​​​​​m2

Also we have: Current I=8.14A, Magnetic field T= 2.26Tesla

Maximum Tarque is given by:

{where N is number of turns}

Putting available values in this equation we have;

Newton meter

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