Questions in Moving Charges and Magnetism

Select	Question
	Two galvanometers A and B require 3mA and 5mA respectively to produce the same deflection of 10 divisions. Then
	Two long straight parallel conductors separated by a distance of 0.5m carry currents of 5A and 8A in the same direction. The force per unit length experienced by each other is
	If the current is doubled, the deflection is also doubled in
	Which is a vector quantity
	There long straight wires A, B and C are carrying current as shown figure. Then the resultant force on B is directed .....
	Two long conductors, separated by a distance d carry current I1 and I2 in the same direction. They exert a force F on each other. Now the current in one of them is increased to two times and its directions is reversed. The distance is also increased to 3d. The new value of the force between them is
	The resultant magnetic moment of neon atom will be
	A one metre long wire is lying at right angles to the magnetic field. A force of 1 kgwt. is acting on it in a magnetic field of 0.98 Tesla. The current flowing in it will be
	A beam of electrons and protons move parallel to each other in the same direction, then they
	Two parallel wires of length 9 m each are separated by a distance 0.15 m. If they carry equal currents in the same direction and exerts a total force of $30 \times 10^{–7}$ N on each other, then the value of current must be