Current Electricity - Result Question 80

85. Two electric bulbs, one of 200V,40W and other of 200V,100W are connected in a domestic circuit. Then

[2000]

(a) they have equal resistance

(b) the resistance of 40W bulb is more than 100W bulb

(c) the resistance of 100W bulb is more than 40W bulb

(d) they have equal current through them

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Answer:

Correct Answer: 85. (b)

Solution:

(b) R1=V2P1=200×20040=1000Ω

R2=V2P2=200×200100=400Ω

R1 (for .40W)>R2 (for 100W )



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