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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: - A spherical drop of mercury having a potential of 2.5 v is obtained as a result
- In which of the follows decays, the element does not change?
- Magnetism of a magnet is due to
- The current in the coil of inductance 5H decreases at the rate of 2 A/s
- A transformer is used to light a 100 W and 110 V lamp from a 220 V mains.
Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A spherical drop of mercury having a potential of 2.5 v is obtained as a result
- In which of the follows decays, the element does not change?
- Magnetism of a magnet is due to
- The current in the coil of inductance 5H decreases at the rate of 2 A/s
- A transformer is used to light a 100 W and 110 V lamp from a 220 V mains.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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