In a long wire of square cross-section of side length l, current density varies with distance x from one edge of cross-section as
`J=ae^(hx)A//m^(2)`
Where a and b are positive constants. Find the current flowing in wire.
`[(al)/(b)(e-1)]`

A current of 4.8 A is flowing in a copper wire of cross-sectional area 3xx10^(-4) m^(2) . Find the current density in the wire.

A long straight wire of circular cross- section carries a current along its length. On the axis inside the wire, it follows that

A long straight wire of circular cross- section carries a current along its length. On the axis inside the wire, it follows that

A long cylindrical conductor of radius R carries a current i as shown in the figure. The current density J varies across the cross-section as J = kr^(2) , where, k is a constant. Find an expression for the magnetic field B at a distance r (lt R) from the axis

A long cylindrical conductor of radius R carries a current i as shown in the figure. The current density J varies across the cross-section as J = kr^(2) , where, k is a constant. Find an expression for the magnetic field B at a distance r (lt R) from the axis

Consider a conductor of variable cross section in which current is flowing from cross section 1 to 2. Then

Consider a conductor of variable cross section in which current is flowing from cross section 1 to 2. Then

A wire of radius R having uniform cross section in which steady current l is flowing. Then

A wire of radius R having uniform cross section in which steady current l is flowing. Then