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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 transverse wave is represented by y = a sin (?t – kx)
- The radius of the convex surface of a plano-convex lens is 20 cm and the refractive index
- A nuclear reaction is given as 4 ₁H¹→₂He⁴+₀e¹+energy Mention the type of reaction.
- A Gaussian surface in the cylinder of cross-section πa² and length L is immersed
- If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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