Which one of the following does not have negative temperature co-efficient ____________?

Related Mcqs:

Which of the following has no units?

A. Permeability B. Moment of a magnet C. Magnetic susceptibility D Permittivity...

Electric pressure is also called________?

A. resistance B. power C. voltage D. energy...

A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is_____________?

A. 6.4 A, 6.9 A B. 6.4 A, 9.6 A C. 4.6 A, 6.9 A D. 4.6 A, 9.6 A...

If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes______________?

A. 0.4 ohm B. 0.6 ohm C. 0.8 ohm D. 1.0 ohm...

A nichrome wire used as a heater coil has the resistance of 2 £2/m. For a heater of 1 kW at 200 V, the length of wire required will be_____________?

A. 80 m B. 60 m C. 40 m D. 20 m...