Two coaxial circular loops of raadii `r_(1)` and `r_(2)` are separated by a distance `x` and carry currents `i_(1)` and `i_(2)` respectively. Calculate the mutual inductance. What is the force between the loops ?

Two coaxial circular loops of radius 0.5 m and 5 xx 10^(-2)m are separated by a distance 0.5 m and carry currents 2 A and 1 A respectively. The force between the loops due to mutual induction is

Two circular loops A and B of radii R and 4R are kept concentrically in the same plane. The loops carry currents I_(1) and I_(2) respectively. If the magnetic field at a point on the common axis of the loops at a distance 2R from their common centre is zero, the ratio (I_(1))/(I_(2)) is _________.

Two concentric circular loops of radii r_(1) and r_(2) carry clockwise and anticlockwise currents i_(1) and i_(2) . If the centre is a null point, i_(1)//i_(2) must be equal to

Two concentric coplanar circular loops of radii r_(1) and r_(2) carry currents of respectively i_(1) and i_(2) in opposite direction (one clockwise and the other anticlockwise). The magnetic induction at the centre of the loops is half that due to i_(1) alone at the centre. if r_(2)=2r_(1) . the value of i_(2)//i_(1) is

Two concentric coplanar circular loops of radii r_(1) and r_(2) carry currents of respectively i_(1) and i_(2) in opposite direction (one clockwise and the other anticlockwise). The magnetic induction at the centre of the loops is half that due to i_(1) alone at the centre. if r_(2)=2r_(1) . the value of i_(2)//i_(1) is

Two circular loops of radii R and r (R > > r) have same cenre and carry currents I and i respectively. Find the maximum torque and maximum angular acceleration of smallar loop, if it is free to rotate about y axis where as the bigger loop is fixed. (Neglect the inductance of the system). The mas of the smaller loop is m.

Two concentric circular loops of radii 1 cm and 20 cm are placed coaxially. Find mutual inductance of the arrangement.