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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
- When alpha particles captures and electron, then it becomes a
- If the band gap between valence band and conduction band in a material is 5.0 eV,
- The self-inductance of a coil having 500 turns is 50mH. The magnetic flux
- A satellite A of mass m is at a distance r from the centre of earth. Another satellite
- A potentiometer wire is 100cm long and a constant potential difference is maintained
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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