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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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- One solid sphere A and another hollow sphere B are of same mass and same outer radii.
- Given A=4i+6j and B=2i+3j. Which of the following is correct?
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The young’s modulus of steel is twice that of brass. Two wires of same length
- One solid sphere A and another hollow sphere B are of same mass and same outer radii.
- Given A=4i+6j and B=2i+3j. Which of the following is correct?
- In an ammeter, 0.2% of main current passes through the galvanometer
- Maximum velocity of the photoelectrons emitted by a metal surface is 1.2×10⁶ ms⁻¹.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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