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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 and B are two vectors and θ is the angle between them ,if |A x B|=√3(A.B),the value of θ
- If sink is at a temperature of -39⁰C and source at 0⁰C, then efficiency will be
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- A force of 5 N is acting on an object. Displacement of object is 10 m and the work done
- When a charged oil drop moves upwards in an 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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