The bulb does not glow in the setup. List the possible reasons. Explain you answer.

The bulb doesn't glow in the setup shown in the given figure .List the possibl reasons .Explain your answer.

When does a bulb glow ?

A lamp is connected in series with an inductor to a d.c. source. What will happen to its glow, when it is connected directly to the same source? Explain your answer.

Fresh milk has a ph of 6. how do you think the ph will change as it turns into curds ? Explain your answer.

An air cored coil L and a bulb B are connected in series to the a.c. mains as shown in the given figures SAQ. 41: The bulb glows with some brightness. Now will the glow of the bulb change if an iron rod is insertd in the coil? Give reasons in support of your answer.

Three incandescent bulbs of 100 W each are connected in series in an electric circuit. In another set of three bulbs of the same wattage are connected in parallel to the source. Will the bulb in the two circuits glow with the same brightness? Justify your answer.

Zubeda made n electric circuit using a cell holder shown in fig.14.4, a switch and a bulb. When she put the switch in the 'ON' position, the bulb did not glow. Help zubeda in identifying the possible defects in the circuit.