Two infinite plates shown in cross-section in figure carry `lamda` amperes of current out of thepage per unit width of plate. Find the magnetic field at points `P` and `Q`.

Two large metal sheets carry surface currents as shown in figure . The current through a strip of width dl is Kdl where K is a constant . Find the magnetic field at the points P,Q and R.

Two large metal sheets carry surface currents as shown in figure . The current through a strip of width dl is Kdl where K is a constant . Find the magnetic field at the points P,Q and R.

Two large metal sheets carry surface currents as shown in figure . The current through a strip of width dl is Kdl where K is a constant . Find the magnetic field at the points P,Q and R.

Two infinitely long wires each carrying current I along the same direction are made into the geometry as shown in the figure. The magnetic field at the point P is

A wire of infinite length bent as shown in figure carries current l. What is the magnetic field at the point P ?

A wire of infinite length bent as shown in figure carries current l. What is the magnetic field at the point P ?

The figure shows the cross section of two long coaxial tubes carrying equal current I in opposites directions. If B_1 and B_2 are magnetic fields at point 1 and 2 as shown in figure then