Questions
Three identical bulbs are connected as shown in the figure. Total power consumed by the circuit is ‘p’. If the bulb is fused, total power consumed by the system will be . Then
detailed solution
Correct option is B
If resistance of each bulb is R, then initial equivalent resistance of the system is, RC=R×RR+R+R=3R/2.Write B2 gets fused, RC1=R+R=2RSince power consumed by the system=V2RCWe can write, P1P=RCRC1=3R/22R=34⇒P1=3P4Talk 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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