A deflection of 24 divisions ofa ballistic galvanometer is obtained either by charging a capacitor of 3 mu F capacitance to a potential difference of 2V and discharging through the galvanometer or by connecting the ballistic galvanometer in series with a flat circular coil of 80 turns, each of diameter 1cm, the combined resistance of coil and galvanometer being 4000 ohm and quickly thrusting the coil into a strong magnetic field so that the plane of the coil is perpendicular to the direction of the field. Calculate the sensitivity of the galvanometer and calculate the strength of the magnetic field. The strength of the earth's magnetic field may be neglected.

A deflection of 24 divisions ofa ballistic galvanometer is obtained ei

1.	A deflection of 24 divisions ofa ballistic galvanometer is obtained either by charging a capacitor of 3 mu F capacitance to a potential difference of 2V and discharging through the galvanometer or by connecting the ballistic galvanometer in series with a flat circular coil of 80 turns, each of diameter 1cm, the combined resistance of coil and galvanometer being 4000 ohm and quickly thrusting the coil into a strong magnetic field so that the plane of the coil is perpendicular to the direction of the field. Calculate the sensitivity of the galvanometer and calculate the strength of the magnetic field. The strength of the earth's magnetic field may be neglected.
Answer» Answer :[4 DIV PER `MU C`, 3.82 T]

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