Electricity and Magnetism MCQ question and answer with solution | Physics Gk MCQs

A. west

B. east

C. south

D. north

A. will continue to work at double capacity

B. will not work

C. will continue to function normally

D. Will continue to work at half its capacity

A. one fourth

B. half

C. double

D. four times

A. conducting and of low melting point

B. conducting and of high melting point

C. insulator and of high melting point

D. insulator and of low melting point

A. Potential difference

B. current

C. powet

D. resistance

A. currents circulating inside the core

B. presence of a huge magnet at its centre

C. moving charges in space outside

D. None of the above

A. Ohm's law is an assumption that current through a conductor is always directly proportional to the potential difference applied to it

B. A conducting device obeys Ohm's law when the resistance of a device is independent of magnitude and polarity of applied potential difference

C. A conducting material obeys Ohm's law when the resistance of material is independent of the magnitude and direction of applied electric field

D. All homogeneous materials obey Ohm's law irrespective of whether the field is within range or strong

A. matter becomes radioactive

B. a metal loses magnetic properties

C. a metal loses conductivity

D. transmutation of metal occurs

A. IL

B. I²L

C. IL^-1

D. IL^-2

A. 18 A

B. 0.18 A

C. 1.8 A

D. 0.018 A