Question

please answer with explanation and dont copy from web.
what is the rate at which energy being delivered to a bulb is higher:just after it is turned on,the glow of filament is increasing,or after it has been on for a few seconds and the glow is steady?

Answer 1

your answer is simple.
just after it is turned on,the energy supplied to the bulb is higher.
because initially resistance is low and it increases with the increase in temperature.

Answer 2

Explanation:

As, the voltage is applied across the cold filament, when it is first turned on, the resistance of the filament is low, the current is high and a relatively large amount of power is delivered to the bulb.

As the filament warms, its resistance increases and the current decreases. As a result, power delivered to bulb decreases.