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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
- The intermediate image formed by the objective of a compound microscope is
- A siren emitting sound of frequency 800 Hz is going away from a static listener
- A spherical body of emissivity e=0.6, placed inside a perfectly black body is maintained
- When a mass M is attached to the spring of force constant k,
- A bus is moving with a velocity of 5 ms⁻¹ towards a huge wall.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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