Questions
Three identical bulbs are connected in series parallel combination as shown. Rating of each bulb is 45 W, 100 . If a 100V supply is connected across the combination, the power consumed by the system will be
detailed solution
Correct option is D
If R be the resistance of each bulb, then R=V2PNow, RC=R×RR+R+R=3R2i=current flowing through B3=V3R/2=23VRP1=i22.R×2+i2R=32i2R=322V3R2R=23V2R=23P∴ P1=23×45W=30WTalk to our academic expert!
Similar Questions
Two 1000 W heaters when connected in parallel across 220 V supply produce heat Hp in time t. If they are connected in series across the same power supply, the heat produced in the same time is HS. What is (HP / HS) ?
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