In a moving coil galvanometer, a rectangular coil of N turns, area of cross-section A and moment of inertia l is suspended in a radial field B through a spring.
(a) If a current `i_(0)` produces a deflection of `(pi)/(4)` in the coil, find the torsional constant of the spring
(b) Find the maximum deflection surffered by the coil, if a charge Q is passed through it in a short interval of time

In a moving coil galvanometer, torque on the coil can be experessed as tau = ki , where i is current through the wire and k is constant . The rectangular coil of the galvanometer having number of turns N , area A and moment of interia I is placed in magnetic field B . Find (a) k in terms of given parameters N,I,A andB (b) the torsion constant of the spring , if a current i_(0) produces a deflection of (pi)//(2) in the coil . (c) the maximum angle through which the coil is deflected, if charge Q is passed through the coil almost instaneously. ( ignore the daming in mechinal oscillations).

In a moving coil galvanometer, torque on the coil can be experessed as tau = ki , where i is current through the wire and k is constant . The rectangular coil of the galvanometer having number of turns N , area A and moment of interia I is placed in magnetic field B . Find (a) k in terms of given parameters N,I,A andB (b) the torsion constant of the spring , if a current i_(0) produces a deflection of (pi)//(2) in the coil . (c) the maximum angle through which the coil is deflected, if charge Q is passed through the coil almost instaneously. ( ignore the daming in mechinal oscillations).

In a moving coil galvanometer, torque on the coil can be experessed as tau = ki , where i is current through the wire and k is constant . The rectangular coil of the galvanometer having number of turns N , area A and moment of interia I is placed in magnetic field B . Find (a) k in terms of given parameters N,I,A andB (b) the torsion constant of the spring , if a current i_(0) produces a deflection of (pi)//(2) in the coil . (c) the maximum angle through which the coil is deflected, if charge Q is passed through the coil almost instaneously. ( ignore the daming in mechinal oscillations).

If in a moving coil galvanometer, a current I produces a deflection theta , then

If in a moving coil galvanometer, a current I produces a deflection theta , then

In a moving coil galvanometer the current 'I' is related to the deflection theta as

A rectangular coil of area 5.0 xx 10^(-4) m^(2) and 40 turns is pivoted about one of its vertical sides. The coil is in a horizontal field of 80 gauss. If a current of 0.20 mA produces an angular deflection of 20^(@) , then the torsional constant of the hair spring connected to the coil is (in Nm/degree)

A rectangular coil of area 5.0 xx 10^(-4) m^(2) and 40 turns is pivoted about one of its vertical sides. The coil is in a horizontal field of 80 gauss. If a current of 0.20 mA produces an angular deflection of 20^(@) , then the torsional constant of the hair spring connected to the coil is (in Nm/degree)