Which of the following can have negative temperature coefficient _____________?

Related Mcqs:

The voltage induced in an inductor is represented as,

A. product of its inductance and current through it. B. ratio of its inductance to the current through it. C. ratio of the current through it to its inductance. D. product of its inductance and rate of change of current through it....

Which is the best conductor of electricity _______________?

A. Iron B. Silver C. Copper D. Carbon...

In a lamp load when more than one lamp are switched on the total resistance of the load_____________?

A. increases B. decreases C. remains same D. none of the above...

Switching of a lamp in house produces noise in the radio. This is because switching operation produces________?

A. arcs across separating contacts B. mechanical noise of high intensity C. both mechanical noise and arc between contacts D. none of the above...

When current flows through heater coil it glows but supply wiring does not glow because______________?

A. current through supply line flows at slower speed B. supply wiring is covered with insulation layer C. resistance of heater coil is more than the supply wires D. supply wires are made of superior material...