Home
Class 11
PHYSICS
If the flow of electric current is paral...

If the flow of electric current is parallel to the magnetic field, the force will be ______
a) Zero
b) Infinity
c) Maximum
d) Half the original value

Text Solution

Verified by Experts

The electric force `= e^2/(4 pi epsilon_0r^2)`
and the gravitatioN/Al force `= (G(m_e)^2)/r^2`
The ratio is `e^2/(4 pi epsilon_0 G(m_e)^2)`
`= (9xx10^9 (N-m^2)/C^2xx(1.6xx10^-19C)^2)/(6.67xx10^-11 (N-m^2)/kg^2xx(9.1xx10^-31 kg)^2)= 4.17xx10^42`.
Promotional Banner

Similar Questions

Explore conceptually related problems

When electric current I flow through a straight wire of length I placed in a magnetic field , a magnetic force of 1N acts on it . If magneitude of the electric current is halved and the magnetic field is doubled , what will be the magnetic force acting on the wire ?

Any charge is moving parallel and antiparallel to magnetic field, then what is magnetic force on it ?

The magnetic field at the centre of ring carrying electric current is ____ of area of the ring.

Explain the force acting on electric dipole when it is placed parallel or anti parallel to electric field.

(a) A current-carrying circular loop lies on a smooth horizontal plane. Can a uniform magnetic field be set up in such a manner that the loop turns around itself (i.e., turns about the vertical axis). (b) A current-carrying circular loop is located in a uniform external magnetic field. If the loop is free to turn, what is its orientation of stable equilibrium? Show that in this orientation, the flux of the total field (external field + field produced by the loop) is maximum. (c) A loop of irregular shape carrying current is located in an external magnetic field. If the wire is flexible, why does it change to a circular shape?

Mention the angle between a current - carrying straight conductor and magnetic field for which the force experienced by the conductor placed in a magnetic field is maximum .

When is the force experienced by a current - carrying conductor placed in a magnetic field largest ?

An electric dipole of moment p is placed parallel to the lines of force of electric field E, then the work done in deflecting it through an angle of 180 degree is

A long solenoid carrying a current produces a magnetic field B along its axis. If the current is doubled and the number of turns per cm is halved, the new value of the magnetic field is _______ .

Write magnetic force equation on current carrying element Ivecl inside magnetic field vecB .