1.

Which of the followingcorrectlydescribles the magnetic field neara longstraight wire ?

Answer»

The FIELD consitsof STRAIGHT lines perpendicular to the wire .
Thefieldconsists of straightlinesparallel to the wire .
The fieldconsitsof radial lines originatingfrom the wire
The field consist of concentriccircles centred on the wire.

Solution :Thisis an experimental fact . WHICHIS onlyexhibitedbyright -handthumb rule.


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