a) Derive the equation for magnetic field on the axis of a circular current loop
b) Draw the magnetic field lines due to a circular wire. Which rule give magnetic
field.
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The magnetic field strength at the center of a circular loop is given by B = μ 0 I 2 R (at center of loop) , B = μ 0 I 2 R (at center of loop) , where R is the radius of the loop. RHR-2 gives the direction of the field about the loop.
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