A rod AB of mass m and length / is positively charged with linear charge density `lambda` C/M. It is pivoted at end A and is hanging freely. If a horizontal electric field

A uniform nonconducting rod of mass ma and length l, with charge density lambda as shown in fig. is hanged at the midpoint at origin so that it can rotate in a horizontal plane without any friction. A uniform electric field E exists parallel to x axis in the entire region. Calculated the period of small oscillation of the rod .

Figure shows a rod of length L which is uniformly charged with linear charge density lambda kept on a smooth horizontal surface. Right end of rod in contact with a vertical fixed wall. A block of mass m and charge q is projected with a velocity v from a point very far from rod in the line of rod. find the distance of closest approach between the block & the left end A of the rod.

Two semicircular rings lying in same plane, of uniform linear charge density lambda have radius r and 2r. They are joined using two straight uniformly charged wires of linear charge density lambda and length r as shown in figure. The magnitude of electric field at common centre of semi circular rings is -

Two semicircular rings lying in same plane, of uniform linear charge density lambda have radius r and 2r. They are joined using two straight uniformly charged wires of linear charge density lambda and length r as shown in figure. The magnitude of electric field at common centre of semi circular rings is -

An infinitely long wire with linear charge density +lambda is bent and the two parts are inclined at angle 30^@ as shown in fig, the electric field at point P is :

Two parallel infinite line charges with linear charge densities +lambda C//m and -lambda C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?

Two parallel infinite line charges with linear charge densities +lambda C//m and -lambda C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?

A rod of mass M and length L is placed on a smooth horizontal surface. It is hinged at one end so that it can rotate freely in a horizontal circle about this end. There exists a uniform magnetic field vecB perpendicular, into the horizontal surface everywhere. The strength of magnetic field starts varying as B=B_(0)t. (i) Find the torque acting on the rod about its hinged end. (ii) Find the reaction produced at hinge at t = 0. (A charge Q is distributed uniformaly on the rod)

A wire AMB is placed along y-axis having linear charge density lambda C/m. The electric field intensity at point P is ( PM=0.1 m)

A rod AB of length L and mass m is uniformly charged with a charge Q, and it is suspended from end A as shown in fig. The rod can freely rotate about A in the plane of the figure. An electric field E is suddenly switched on in the horizontal direction due to which the rod gets turned by a maximum angle of 90^(@) . The magnitude of E is equal of nMg//Q . Find the value of n.