Home
Class 12
PHYSICS
If resistance of the filament increases ...

If resistance of the filament increases with temperature, what will be power dissipated in a `220 V - 100 W` lamp when connected to `110 V` power supply

A

25W

B

lt25W

C

gt25W

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS|Exercise Thermal Power in Resistance Connected in Circuit|28 Videos

  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS|Exercise Integer|5 Videos

  • GRAVITATION

    CENGAGE PHYSICS|Exercise Question Bank|39 Videos

  • INDUCTANCE

    CENGAGE PHYSICS|Exercise Concept Based|9 Videos

Similar Questions

Explore conceptually related problems

The resistance of the filament of a lamp increases with the increase in temperature. A lamp rated 100 W and 220 V is connected across 220 V power supply. If the voltage drops by 10% , then the power of the lamp will be

The resistance of hot tungsten filament is about 10 times the cold resistance. What will be the resistance of 100 W and 200 V lamp when not in use?

(a) A 220V-100W bulb is connected to 110V source. Calculate the power consumed by the blub. (b) Calculate the following for a 100W - 200V bulb (i) Resistance of the filament of bulb (ii) Current through bulb when it is connected to 200V line (iii) Power consumed when bulb is connected to 100V line (c) An electric bulb rated 100W -200V is used in a circuit having 400V supply. what resistance R must be put in series with bulb so that bulb delivers 100W ? (d) Repeat the previous problem, if bulb delivers 25W . (e) Two bulbs, 50W-220V, 100W-200V are connected in series across a 220V supply. find the power consumed by each bulb.

A bulb is marked 220V, 100W. What will be the current in the filament when connected to 200V?

An electric bulb is rated 220 V and 100 W . When it is operated on 110 V , the power consumed will be :

What will be the resistance of a bulb of power 40 W which is connected to a voltage source of 220V?