Out of the following which is an insulating material____________?

Related Mcqs:

A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is___________?

A. 400 Q B. 600 Q C. 800 Q D. 1000 Q...

Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across______________?

A. Rl B. Ri C. either Rl or Ri D. none of them...

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...