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Inductors - Technical MCQs

Q1:

As current travels within a conductor:

A the magnetic field aids the current

B a magnetic field is developed around it

C the wire tries to point north

D an electrostatic field opposes the current

ANS:B - a magnetic field is developed around it

According to Left hand rule the magnetic filed is generated around the conductor when current flows from it. The direction of magnetic field is in the direction of folded fingers when thumb of hand is pointing the direction of current.