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The self-inductance of a choke coil is 10 mH. When it is connected with a 10 V DC source, then the loss of power is 20 W. When its is connected with 10 V AC source loss of power is 10 W. The frequency of AC source will be
Options
(a) 80 Hz
(b) 100 Hz
(c) 120 Hz
(d) 220 Hz
Correct Answer:
80 Hz
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
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- At what temperature will the rms speed of air molecules be double that of NTP?
- When an object is placed 40cm from a diverging lens, its virtual image is formed 20 cm
- A meter stick of mass 400 g is pivoted at one end and displaced through an angle 60°.
- The resistance of a bulb filament is 100 Ω at a temperature of 100⁰C.
- ₉₂U²³⁴ has 92 protons and 238 nucleons. It decays by emitting an alpha particle
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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