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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
- Heat is not being exchanged in a body. If its internal energy is increased, then
- A coil has an area of 0.05 m² and it has 800 turns. It is placed perpendicularly
- Three objects A,B and C are kept in a straight line on a frictionless horizontal surface
- A solenoid has length 0.4 cm, radius 1 cm and 400 turns of wire. If a current
- A rectangular copper coil is placed in a uniform magnetic field of induction 40 mT
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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