Moving Charges ...

The acceleration of an electron at a certain moment in a magnetic field $$\vec{B}=2\hat{i}+3\hat{j}+4\hat{k}$$ is $$\vec{a}=x\hat{i}+\hat{j}-\hat{k}$$.The value of x is

A charged particle moving along positive x-direction with a velocity $$v$$ enters a region where there is a uniform magnetic field $$\vec{B}=-B\hat{k}$$,from x=0 to x=d.The particle gets deflected at an angle $$\theta$$ from its initial path.The specific charge of the particle is 

If a charged particle projected from origin with some initial velocity $$({v}_{0}\hat { i } )$$ in a uniform magneitc field $$({B}_{0}\hat { i } )$$. At some point of time direction of magnetic field is reversed then which of the following path is/are possible for the charged particle. Here $${v}_{0}$$ and $${B}_{0}$$ are positive constants.

The force of repulsion between two parallel wires is $$F$$ when each one of them carries a certain current I. If the current in each is doubled, the force between them would be

Two long parallel wires are at a distance of 1m. If both of them carry one ampere of current in same direction, then the force of attraction on unit length of the wires will be

A rectangular loop carrying a current $$i_1$$, is situated near a long straight wire carrying a steady current $$i_2$$. The wire is parallel to one of the sides of the loop and is in the plane of the loop as shown in the figure. Then the current loop will

When a charged particle particle, moving with a velocity v, is subjected to a magnetic field, the force on it is non-zero. This implies that

A magnetic field cannot exert any force on a :

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

When a charged particle moving with velocity $$\vec V$$ is subjected to a magnetic field of induction $$\vec B$$, the force on it is non-zero. This implies the