1.

A conducting gas is in the form of a long length of the cylinder. The current is distributed uniformly across the cross - section of the gas. Disgard thermal and electrostatic forces among the gas molecules. Due to the magnetic fields set up inside the gas and the forces which they exert on the moving ions, the gas will tend to

Answer»

expand
Contract
expand and contract alternately
none of the above

Solution :TREAT the gas as a thick conductor carrying a uniform current. Apply Ampere's law to find the magnetic FIELD. Then apply the left`-` HAND RULE to find the direction of the Ampere FORCE.


Discussion

No Comment Found

Related InterviewSolutions