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The primary of a transformer when connected to a dc battery of 10 volt draws a current of 1mA. The number of turns of the primary and secondary windings are 50 and 100 respectively. The voltage in the secondary and the current drawn by the circuit in the secondary are respectively
Options
(a) 20 V and 0.5 mA
(b) 20 V and 2.0 mA
(c) 10 V and 0.5 mA
(d) zero and therefore no current
Correct Answer:
zero and therefore no current
Explanation:
A transformer is essentially an AC device. DC sources so no mutual induction between coils E₂ = 0 and I₂ = 0
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A ball is dropped into a well in which the water level is at a depth h below the top
- A wave travelling in the +ve x-direction having displacement along y-direction as 1m
- If R is the radius of earth, the height at which the weight of a body 1/4 of its weight
- A certain metallic surface is illuminated with monochromatic light of wavelength
- 1 Wb/m² equal to
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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