Moving Charges ...

A charged particle, having charge $$q$$ accelerated through a potential difference $$V$$ enters a perpendicular magnetic field in which it experiences a force $$F$$. If $$V$$ is increased to $$5 V$$,the particle will experience a force

A particle of charge $$q$$ and mass $$m$$ moving with a velocity $$v$$ along $$x-$$axis enters the region $$x > 0$$ with uniform magnetic field $$B$$ along the $$\hat k$$ direction. The particle will penetrate in this region in the $$x-$$direction up to a distance $$d$$ equal to

If the distance as well as the current in each of two parallel current carrying wires is doubled, the force per unit length acting between them becomes

The distance between the wires of electric mains is 12cm. These wires exprience 4 mgwt per unit length. The value of current flowing in each wire will be if they carry current in same direction

The distance between two parallel wires carrying current of $$1A$$ is $$1m$$. The force per unit length between the conductors is

In an electric motor, wires carrying a current of $$5A$$ are placed at right angles to a magnetic field of induction $$0.8 T$$. If each wire has length of $$20cm$$, then the force acting on each wire is :

Two parallel conductors carrying 5A each, repel with a force of 0.25 N $$m^{-1}$$ . The distance between them is

Two long straight wires carry currents 5 A and 10 A in the same direction are separated by 20 cm. The force between wires is

The magnitude of the force between a pair of conductors, each of length $$110\ cm$$, carrying a current of $$10\ A$$ each and separated by a distance of $$10 cm$$ is ($$\mu_{0}=4\pi\times 10^{-7}H/m$$)

Two conductors each of length $$12m$$ lie parallel to each other in air. The centre to centre distance between the two conductors is $$15\times 10^{-2}m$$ and the current in each conductor is $$300A$$. The force in newton tending to pull the conductors together is: