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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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Topics: Current Electricity
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If the r.m.s. velocity of a gas is v, then
- A body of mass 0.5 kg travels in a straight line with velocity v=a x³/², where
- In a vaccum triode the function of grid voltage is
- Two point charges +2 coulomb and +10 coulomb repel each other with a force of 12 N.
- The nuclear radius of a certain nucleus is 7.2 fm and it has a charge of 1.28×10⁻¹⁷ C.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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