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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
Related Questions: - Resistances n, each r Ω, when connected in parallel give an equivalent resistance
- The motion of a particle along a straight line is described by equation
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Resistances n, each r Ω, when connected in parallel give an equivalent resistance
- The motion of a particle along a straight line is described by equation
- Two discs of same material and thickness have radii 0.2 m and 0.6 m.
- If the electric field lines is flowing along axis of a cylinder, then the flux
- The workdone in turning a magnet of magnetic moment M by an angle of 90⁰ from the magnetic
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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