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The primary and secondary coil of the transformer have 50 and 1500 turns respectively. If the magnetic flux ? linked with the primary coil is given by ? = ?￢ﾂﾀ + 4t, where ? is in webers, t is time in seconds and ?￢ﾂﾀ is the constant, the output voltage across the secondary coil is
Options
(a) 120 volts
(b) 220 volts
(c) 30 volts
(d) 90 volts
Correct Answer:
120 volts
Explanation:
Vₛ / Vₚ = Nₛ / Nₚ where
Nₛ = No. of turns across primary coil = 50
Nₚ = No. of turns across secondary coil = 1500
and Vₚ = d? / dt = d/ dt( ?￢ﾂﾀ + 4t) = 4
⇒ Vₛ = 1500 / 50 x 4 = 120 V
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A focal length of a lens is 10 cm. What is power of a lens in dioptre?
- Two capacitors having capacitances C₁ and C₂ are charged with 120V and 200V batteries
- Number of electrons in one mC charge, given e=1.6×10⁻¹⁹ C, will be
- Cathode rays are produced when the pressure is of the order of
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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