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A circular coil of radius 1*5 cm carri...

A circular coil of radius `1*5 cm carries a current of 1*5A`. If the coil has 25 turns , find the magnetic field .What is the value of M ?

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Solution: The magnetic field at the centre due to each
turn is
` (mu_0) i/ 2a`
The net field due to all 25 turns is
` B= (mu^0)i n/ 2a =(((2pi xx (10^-7) TmA^-1)(1*5A ) xx 25)/(1*5 xx 10^-2)m)`
` = 1*57 xx 10^-3 T.`
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HC VERMA-MAGNETIC FIELD DUE TO CURRENT-exercise
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  2. Using the formulae ((vecF)=(vec qv)xx (vec B) and B= (mu0)i/(2pi r ),f...

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  3. A current of 10A is established in a long wire along the positive z-ax...

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  13. Four long, straight wires, each carrying a current of 5.0 A, are place...

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  14. Figure shows a long wire bent at the middle to form a right angle. Sho...

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  15. Consider a straight piece of length x of a wire carrying a current i. ...

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  16. Consider a 10-cm long piece of a wire which carries a current of 10A ....

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  19. Figure shows a square loop of edge a made of a uniform wire. A current...

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