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Two resistors of 6Ω and 9Ω are connected in series to a 120 V source. The power consumed by 6Ω resistor is
Options
(a) 384Ω
(b) 616Ω
(c) 1500Ω
(d) 1800Ω
Correct Answer:
384Ω
Explanation:
Equivalent resistance in series = 6 + 9 = 15 Ω
Current flow in circuit, i = V / R = 120 / 15 = 8 A
Voltage in 6Ω resistor, V = iR = 8 × 6 = 48 V
Power consumed by 6Ω resistor,
P = V² / R = (48 × 48) / 6 = 8 × 48 = 384 W
Related Questions: - A long straight wire is carrying a current of 12 A. The magnetic field at a distance
- Three resistances 2Ω, 3Ω and 4Ω are connected in parallel. The ratio of currents passing
- Light of frequency 8×10¹⁵ Hz is incident on a substance of photoelectric work
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Topics: Current Electricity
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A long straight wire is carrying a current of 12 A. The magnetic field at a distance
- Three resistances 2Ω, 3Ω and 4Ω are connected in parallel. The ratio of currents passing
- Light of frequency 8×10¹⁵ Hz is incident on a substance of photoelectric work
- In a n-p-n transistor about 10¹⁰ electrons enter the emitter in 2 μs,
- A plank with a box on it at one end is gradually raised about the other end.
Topics: Current Electricity (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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