A torch uses three lamps connected in parallel and is powered by a cell of electromotive force (e.m.f.) 3.0 V and negligible internal resistance. Each lamp dissipates 0.60 W of power. What is the current in the cell?
A.
0.067 A
B.
\(\quad 0.20 \mathrm{~A}\)
C.
\(\quad 0.60 \mathrm{~A}\)
D.
\(\quad 0.83 \mathrm{~A}\)
Exam No：9702_w24_qp_11 Year：2024 Question No：33
Answer:
C
Knowledge points:
9.2.1 define potential difference and the volt
9.2.2 recall and use
9.2.3 recall and use P = VI and P = I2R
Solution:
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