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Current Electricity

  1. Two electric bulbs, one of 200 V, 40W and other of 200 V, 100W are connected in a domestic circuit. Then​​
    1. ​they have equal resistance ​
    2. ​the resistance of 40W bulb is more than 100W bulb
    3. the resistance of 100W bulb is more than 40 W bulb
    4. they have equal current through them
Correct Option: B

R1 = = 200 x 200 = 1000Ω
P140

R2 = = 200 x 200 = 400Ω
P2100

∴ R1 (for 40W) > R2 (for 100 W)



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