A filament bulb (500W,100V) is to be used in a 230V main supply. When a resistance

A filament bulb (500W,100V) is to be used in a 230V main supply. When a resistance R is connected in series, it works perfectly and the bulb consumes 500w. The value of R is

Options

(a) 230Ω
(b) 46Ω
(c) 26Ω
(d) 13Ω

Correct Answer:

26Ω

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV,
  2. Element ²³⁴U has 92 protons and 234 nucleons in its nucleus. It decays by
  3. In Moseley’s law √ν=a(z-b), the values of the screening constant for K-series
  4. An isolated sphere has a capacitance of 50pF. What would be the radius of the sphere?
  5. The displacement of a particle varies according to the relation x=4 (cos π t + sin π t)