A. 240Ω
B. 360Ω
C. 720Ω
D. 1440Ω
E. 2880Ω
Correct Answer:
Option D – 1440Ω
Explanation
R = V²/P = 240²/40 = 1440Ω
Calculate the resistance of the filament of a lamp rates 240V; 40W?
![A coil of inductance 0.12 H and resistance 4Ω, is connected across a 240V, 50Hz supply. Calculate the current through it. [π = 3.142]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A coil of inductance 0.12 H and resistance 4Ω, is connected across a 240V, 50Hz supply. Calculate the current through it. [π = 3.142]")
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