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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 maximum kinetic energy of the photoelectrons depends only on
- The escape velocity of a body from earth’s surface is Ve. The escape velocity
- Radiofrequency choke uses core of
- The input characteristics of a transistor in CE mode is the graph obtained by plotting
- The ratio of specific heats Cp/Cv=γ in terms of degrees of freedom (n) is given by
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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