When the r.m.s value of a source of electricity supply is given as 240v, it…

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

Correct Answer: Option B

Explanation

The relationship between the peak value and r.m.s value of electricity supply is given as
V(_{r.m.s}) = (frac{V_o}{sqrt{2}})
where V_o = peak voltage
∴ V_o = V(_{r.m.s}) × √2
= 240 × √2
= 339.5v
= 340v

There is an explanation video available below.