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

A. increases

B. decreases

C. remains same

D. None of these

A. Temperature

B. Resistivity

C. Length

D. Cross section area

A. Due to its high conductivity and melting point

B. Due to its high resistivity and melting point

C. Due to its high resistivity and boiling point

D. Due to its high conductivity and boiling point

A. magnetic field increases

B. magnetic saturation level in core increases

C. residual magnetism in core decreases

D. loss of energy in core due to eddy currents decreases

A. east - west

B. north - east

C. south - west

D. north - south

A. An electric motor converts electric energy into mechanical energy

B. An electric generator works on the principle of electromagnetic induction

C. The magnetic field at the centre of a long circular coil carrying current will be parallel straight lines

D. A wire with green insulation is usually the live wire

A. increase the intensity of light emitted

B. increase the life of the filament

C. make the emitted light coloured

D. make the production of bulb economical

A. Len' Law

B. Coulomb's Law

C. Gauss' Law

D. Ohm's Law

A. 240 C

B. 4 C

C. 40 C

D. 24 C

A. The wires will attract with each other

B. The wires will repel with each other

C. There will be no force between the wires

D. There will be a force between the wires only at the moment when the current is switched ON or OFF