Home
Class 12
PHYSICS
Two bulbs of (40W 200V) and (100W 200V)....

Two bulbs of (40W 200V) and (100W 200V). Then correct relation for their resistances:

A

`R_(40)ltR_(100)`

B

`R_(40)gtR_(100)`

C

`R_(40)=R_(100)`

D

no relation can be predicted.

Text Solution

Verified by Experts

`P=(V^(2))/(R),Pprop(1)/(R)` i.e. `R_(40)gtR_(100)`
Promotional Banner

Similar Questions

Explore conceptually related problems

Two bulbs of 220 V and 100 W are firs connected in series and then in parallel with a supply of 220 V. Total power in buth the cases will be ........

Two bulbs of 250 V and 100 W are first connected in series and then in parallel with a supply of 250 V. Total power in each of the cases will be .............. respectively.

When two electric bulbs of 40W and 60W are connected in parallel, then the:

A and B are two electric bulbs with their ratings respectively 40 W, 110 V and 100 W and 110 V. Find their respective filament resistances. If the bulbs are connected in series with a supply of 220 V, which bulb will fuse ?

The bulbs of 40W,100W and 200watt are connected in series with a voltage source of 220V. Which bulb will glow brightly (most):

Assertion: Two electric bulbs of 50 and 100W. Are given. When connected in sereis 50W bulb glows more but when connected parallel 100 W bulb glows more. Reason : In series combination, power is directly proportional to the resistance of circuit. but in parallel comb ination, power is inversely proportional to the resistance of the circuit.

An electric heater and an electric bulb are rated 500W. 220V and 100W, 220V respectively. Both are connected in series to a 220V d.c. mains. Calculate the power consumed by (i) the heater ana (ii) electric bulb.

Two electric bulbs (60 W and 100 W respectively) are connected in series. The current passing through them is

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

Two bulbs of 60W. 220V, when connected in series with a supply voltage of 220 V, light up with maximum intensity.