The filament of an electric bulb is made of______________?

Related Mcqs:

Which of the followings is/are active element?

A. Voltage source B. Current source C. Both D. None of these....

Which of the following material has nearly zero temperature co-efficient of resistance_________?

A. Manganin B. Porcelain C. Carbon D. Copper...

Insulating materials have the function of______________?

A. preventing a short circuit between conducting wires B. preventing an open circuit between the voltage source and the load C. conducting very large currents D. storing very high currents...

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...

If/, R and t are the current, resistance and time respectively, then according to Joule’s law heat produced will be proportional to_______________?

A. I2Rt B. I2Rf C. I2R2t D. I2R2t*...