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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A bicyclist comes to a skidding stop in 10 m.During this process, the force
- A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire
- When a p-n junction is reverse biased, then the current through the junction
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
- The mean free path of electrons in a metal is 4 x 10⁻⁸ m. The electric field
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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