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1 (a) Figure 1 shows two lamps in series in a circuit.
Figure 1
The resistance of each lamp is 12 Ω.
(i) Calculate the total resistance of the lamps in the circuit.
(1)
total resistance of lamps = ............................... ................ . . . . . . . . . . . . . . . Ω
(ii) The current in a lamp in Figure 1 is 0.50 A.
The resistance of the lamp is 12 Ω.
Calculate the voltage across this lamp.
Use the equation
V=I×R
(2)
voltage = .............................................. . . . . . . . . . . . . . . . . V
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Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in one of the four boxes . If you change your
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
mind about an answer, put a line through the box and then mark your new answer with
a cross .
1 (a) Figure 1 shows two lamps in series in a circuit.
Figure 1
The resistance of each lamp is 12 Ω.
(i) Calculate the total resistance of the lamps in the circuit.
(1)
total resistance of lamps = ............................... ................ . . . . . . . . . . . . . . . Ω
(ii) The current in a lamp in Figure 1 is 0.50 A.
The resistance of the lamp is 12 Ω.
Calculate the voltage across this lamp.
Use the equation
V=I×R
(2)
voltage = .............................................. . . . . . . . . . . . . . . . . V
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