A lamp connected in parallel with a large inductor glows brilliantly before going off, when the swithc is put off. Why?

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.

An electric lamp connected in series with a variable capacitor and an a.c. source is glowing with some brightness. How will the brightness change on increasing the value of capacitance and why?

In a household electric circuit, different appliances are connected in parallel to one another. Give two reasons An electrician puts a fuse of rating 5A in that part of domestic electrical circuit in which an electrical heater of rating 1.5 kW, 220V is operating. What is likely to happen in this case and why? What change, if any, needs to be made?

A current of 1 ampere flows in series circuit contains an electric lamp and a conductor of 5 ohm when connected to a 10V battery. Calculate the resistance of the electric lamp. Now if a resistance of 10 ohm is connected in parallel with this series combination, what change in current flowing through 5 ohm conductor and potential difference across the lamp will take place? Give reason.

An electric lamp of 200 ohm and a toaster of 100 ohm are connected in parallel to a 220 V electricity source. What will be resistance of an electric iron which when connected to the same electric source permits the same current as the total current flowing through both the appliances described above?

A lamp is connected in series with a capacitor to a high frequency a.c. source. How will the glow of the lamp change, when it is connected directly to the same source? Explain your answer.

Two lamps, one rated 60 W at 220V and the other 40 W at 220 V are connected in parallel to the electric supply at 220V. Calculate the total energy consumed by the two lamps together when they operate for one hour.

Why is a spark produced in the switch of a fan when it is put off?

A wire connected to a bulb does not glow, whereas the filament of the bulb glows when the same current flows through them.Why?