Moving Charges ...

A conductivity rod of mass 50 gm and length 10 cm slide without friction on two long. horizontal roads. A uniform magnetic field of magnitude 5 mT exists in the region as shown. A source S is used to maintain a counter current 2 A through the rod. If motion of the rod starts from the rest, its speed after 10s from the start of the motion will be

A charge particle of mass m and charge q is projected with velocity v along plane at a distance a from a long staright current carrying conductor as shown in figure. the radius of curvature of the path traced by the particle at the given position does not depend on

A particle of charge $$1\mu C$$ is at rest in a magnetic field $$\vec{B}= -2\hat{k}$$ tesla. Magnetic Lorentz force on the charge particle with respect to an observer moving with velocity $$\vec{v}= -5\hat{i} ms^{-1}$$ will be

A straight current carrying conductor is kept along the axis of circular loop carrying current. The force exerted by the straight conductor on the loop is:

Electric field and magnetic field in a region of space are given by $$ \overrightarrow E = E_0 \hat j $$ and $$ \overrightarrow B = B_0 \hat j $$ . A charge particle is released at origin with velocity $$ \overrightarrow v =v_0 \hat k $$ then path of particle is 

A charged particle moves through a magnetic field in a direction perpendicular to it. Then the:

A straight wire carrying current 10A is lying such that position vector at its ends are $$\vec r_1 = 2 \hat i - 2 \hat j$$ and $$\vec y_2 = 10 \hat i + 4 \hat j$$. It is kept in a uniform magnetic field 1T $$\hat k$$. Then the force acting on wire is :-

Two infinitely long parallel wires carry equal current in same direction. The magnetic field at a mid point in between the two wires is 

A charge $$'q'$$ moves in a region where electric field $$'E'$$ nd magnetic filed $$'B'$$ both exist, then force on it is :-

A proton, an electron, and a Helium nucleus, have the same energy. They are in circular orbits in a plane due to magnetic field perpendicular to the plane. let $$r_p$$, $$r_e$$ and $$r_{He}$$ be their respectively radii, then ,