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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 ratio of the acceleration for a solid sphere(mass m and radius R)rolling down
- For a normal eye, the cornea of eye provides a converging power 40 D and the least
- A cell of emf E and internal resistance r supplies current for the same time
- If the volume of a block of aluminium is decreased by 1%, the pressure
- For a given velocity, a projectile has the same range R for two angles of projection.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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