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Two bulbs when connected in parallel to a source take 60W each, the power consumed, when they are connected in series with the same source is
Options
(a) 15W
(b) 30W
(c) 60W
(d) 120W
Correct Answer:
30W
Explanation:
In series, P = P₁P₂ / P₁+P₂
Given: P₁ = P₂ = 60
Therefore, Power P = (60 × 60) / (60 × 60) = 30 W.
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The quantity having the same units in all systems of unit is
- A battery of emf 10 V and internal resistance 3 ohm is connected to a resistor.
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- The rms current in an AC circuit is 2 A. If the wattless current be √3 A,
- Young’s modulus of the material of a wire is 18×10¹¹ dyne cm⁻².its value in SI is
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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