A. 240v
B. 340v
C. 480v
D. 57600v
Correct Answer:
Option B – 340v
Explanation
The relationship between the peak value and r.m.s value of electricity supply is given as
Vr.m.s = Vo/√2
where Vo = peak voltage
∴ Vo = Vr.m.s × √2
= 240 × √2
= 339.5v
= 340v
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![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]")