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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.
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The temperature of ideal gas is reduced from 927° C to 27° C. The r.m.s velocity
- A transistor-oscillator using a resonant circuit with an inductor L
- When the length of the vibrating segment of a sonometer wire is increased by
- The de-Broglie wavelength of an electron in the first Bohr orbit is
- A ball is dropped from a height of 20 cm. Ball rebounds to a height of 10cm
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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