Current Electricity MCQ Questions & Answers

1.
Resistance of a material always decreases if

A. Temperature of material is decreased

B. Temperature of material is increased

C. Number of free electrons available becomes more

D. None of the above is correct

A. Ampere-hours

B. Ampere-volts

C. kWh

D. Amperes

A. Equal to the atomic number of the atom

B. Equal to the charge of an electron

C. Equal to the charge of the number of electrons in an atom (#) zero

D. None of these

A. the same as propagation velocity of electric energy

B. independent of current strength

C. of the order of a few micro m/s

D. nearly 3 x 10⁸ m/s

A. Reluctance

B. Charge

C. Power

D. Energy