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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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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Minority carriers in a p-type semiconductor are
- A 220 volts input is supplied to a transformer. The output circuit draws
- The process of adding impurities to the pure semiconductor is called
- An electric motor operating on a 60 volt D.C supply draws a current of 10 amp.
- A projectile is fired at 30°. Neglecting friction, the change in kinetic energy when
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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