A rectangular coil of area `5.0 xx 10^(-4)m^(2)` and 60 turns is pivoted about one of its vertical sides. The coil is in a radial horizontal magnetic field of `9 xx 10^(-3) T`. What is the torsional constant of the spring connected to the coil if a current of 0.20mA produces an angular deflection of `180^(@)` ?

A rectangular coil of area 5.0xx10^-4m^2 and 60 turns is pivoted about one of its vertical sides. The coil is in a radial horizontal magnetic field of 9xx10^-3T . What is the torsional constant of the spring connected to the coil if a current of 0.20mA produces an angular diflection of 18^@ ?

A rectangular coil of area 5.0xx10^(-4) m^2 and 60 turns is pivoted about one of its vertical sides. The coil is in a radial horizontal field of 90 G (radial here means the field liners are in the plane of the coil for any rotation). What is the torsional constant of the hair spring connected to the coil if a current of 2.0 mA produces an angular deflection of 18^@ ?

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)

The rectangular coil of a moving coil galvanometer has area of 8 xx 10^(-4) m^(2) and 100 turns. The coil is kept in a radial horizontal magnetic field of 0.2 T. Calculate the restoring torque constant of hair spring connected to coil when current of 4 xx 10^(-5) A passes through it and deflects the scale by 20^(@) .

A circular coil of cross-sectional area 200 cm^(2) and 20 turns is rotated about the vertical diameter with angular speed of 50 rad//s in a uniform magnetic of 3.0 xx 10^(-2) T . Calculate the maximum value of current in the coil.

A rectangular coil of N turns, with each turn of length 6 cm and breadth 8 cm is suspended freely in a magnetic field of strength 90 G. The field lines are in the plane of the coil. The torsional constant of the hair springs connected to the coil is 3 xx 10^(-9) Nm/deg and a current of 5 muA through the coil deflects it through on angle of 20^(@) . What is the value of N?

A rectangular coil of turns, each of area 20 cm^(2) is suspended freely in a uniform magnetic field of induction 6 xx 10^(-2)Wb//m^(2) ,with its plane inclined at 60◦ with the field. What is the magnitude of the torque acting on the coil, if a current of 100mA is passed through it?