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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
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A galvanometer has a coil of resistance 100 ohm and gives a full-scale deflection
- When two displacements represented by y₁=a sin(?t) are superimposed the motion is
- The escape velocity of a body on an imaginary planet which is thrice the radius
- In Young’s experiment, the ratio of maximum to minimum intensities of the fringe
- Two parallel metal plates having charges +Q and -Q face each other at a certain
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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