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A square loop of side a carris a current...

A square loop of side a carris a current `I`. The magnetic field at the centre of the loop is

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The correct Answer is:
A, B
`B=4(mu_(0)i)/(4pid)[cos45^(@)+cos 45^(@)]`
`=4(mu_(0)i)/(4pi1/2)[2xx1/sqrt2] , =2sqrt2(mu_(0)i)/(pia)`into the plane of paper.
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RESONANCE ENGLISH-ELECTRODYNAMICS-Exercise-1 PART-1
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  2. A long wire carrying i is bent to form a plane angle theta.Find the ma...

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  8. Find the magnitude of the magnetic induction B of a magnetic field gen...

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  9. Find the magnetic induction of the field at the point O at a loop with...

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  10. Calculate magnetic induction at point O if the wire carrying a curre...

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  11. A conductor consists of an infinite number of adjacent wires, each inf...

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  12. Figure shows a cylindrical conductor of inner radius a & outer radius ...

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  16. A tightly- wound, long solenoid is kept with its axis parallel to a la...

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  17. Two large metal sheets carry surface currents as shown in figure . The...

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  19. A neutron, proton, an electron an alpha-particle enter a region of con...

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