When the r.m.s value of a source of electricity supply is...
When the r.m.s value of a source of electricity supply is given as 240v, it means that the peak value of the supply is
240v
340v
480v
57600v
Correct answer is B
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