Physics, 29.12.2020 22:30 dmfraley01
Two lamps rated 60W; 240V and 100W, 240Vrespectively are connected in series to a 240V power source. Calculate;
a) The resistance of each lamp.
b) The effective resistance of the circuit.
c) The current passing the lamps. pls answer correctly
Answers: 1
![P=60+100\\P=160 [W]](/tpl/images/1009/2350/85b2b.png)
![I = P/V\\I=160/240\\I=0.67 [amp]](/tpl/images/1009/2350/936f6.png)
![60 = (0.67)^{2}*R\\R_{60}=133.66[ohm] \\and\\100=(0.67)^{2} *R\\R_{100}=100/(0.66^{2} )\\R_{100}=225 [ohm]](/tpl/images/1009/2350/0e361.png)
![R = 133.66 + 225\\R = 358.67 [ohms]](/tpl/images/1009/2350/c6795.png)
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Two lamps rated 60W; 240V and 100W, 240Vrespectively are connected in series to a 240V power source....
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