Hamad Alternating Current 01/06/2020 A. Sound waves B. Electromagnetic waves C. Radio waves D. Modulated waves Related Mcqs: An alternating current or voltage_____________________?A. fluctuates off and on B. varies in magnitude alone C. changes its direction again and again D. changes its magnitude harmonically and reverses its direction of flow after regularly recurring intervals... A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is_______________?A. (R+2πfL) B. R+1/2πfL C. (R2+f2L2) D. (R2+4π2f2L2)... Ammeter connected in an AC circuit measures______________?A. The exact value of the current B. RMS value of the current C. The net value of the current D. The peak value of the current... What is the self-inductance of a coil in which an induced emf of 2V is set up when the current changes at the rate of 4 As-1 ?A. 0.5 mH B. 0.5H C. 2.0H D. 8.0H... An inductor may store energy in ________________?A. Its electric field B. Its coils C. Its magnetic field D. Both electric and magnetic fields...
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