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ECAT - Practice Test - Physics - Electromagnetism Quiz

Attempt 10 MCQs on ECAT - Practice Test - Physics - Electromagnetism | Quiz 5

41. In an inductor, what is the phase relationship between voltage and current?



42. In a capacitor, what is the phase relationship?



43. What is the impedance of an RLC series circuit?



44. What is the impedance at resonance in a series RLC circuit?



45. What is the resonance frequency of an LC circuit?



46. What is the force on a 0.5 m wire carrying 2 A in a 0.4 T perpendicular field?



47. What is the magnetic field at the center of a 50-turn coil (R=0.1 m, I=2 A)?



48. What is the maximum EMF induced in a 100-turn coil (A=0.02 m²) rotating at 50 Hz in 0.5 T?



49. What is the induced EMF in a 0.5 H inductor when current changes from 2 A to 5 A in 0.1 s?



50. A transformer (Np=2000, Ns=100) connected to 220 V supplies a 10 Ω load. What is the primary current?



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