A lamp is rated 240V 60W The resistance of the ... - JAMB Physics 1990 Question
A lamp is rated 240V, 60W. The resistance of the filament is
A
960\(\Omega\)
B
16\(\Omega\)
C
15\(\Omega\)
D
4\(\Omega\)
correct option: a
P = \(\frac{V_2}{R}\) \(\Rightarrow\) R = \(\frac{V_2}{p}\)
= \(\frac{240\times 240}{60}\)
= 960\(\Omega\)
= \(\frac{240\times 240}{60}\)
= 960\(\Omega\)
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