The magnetic field due to a current carrying circular loop of radius \( 3 \mathrm{~cm} \) at a p...

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The magnetic field due to a current carrying circular loop of radius \( 3 \mathrm{~cm} \) at a point on the axis at a distance of \( 4 \mathrm{~cm} \) from the centre is \( 54 \mu T \). What will be its value at the centre of the loop
(a) \( 250 \mu T \)
(b) \( 150 \mu T \)
(c) \( 125 \mu T \)
(d) \( 75 \mu T \)
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