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About Electrical Inductors
Following are some of the multiple choice questions on the Electrical Inductors with answers that will help the students in developing their knowledge.
Electrical Inductors MCQ
1. What is the voltage across the plates of the capacitor if the capacitance is 10 micro Farads and the Charge stored is 30 micro Coulombs?
2. During charging a capacitor variation of potential V of the capacitor with time t is shown as
3. If the capacitance of a capacitor is 47μF, and the voltage difference across the capacitor terminals is 6V, then the energy stored in that capacitor is:
4. ------------------------ is created out of two metal plates and an insulating material called a dielectric.
6. The production of a voltage across an inductor as a result of its own expanding or contracting magnetic field is called ____.
7. An inductor with an inductance of 5mH is connected in series with a 20 ohm resistor.What is the time constant of the inductor?
8. The voltage induced across an inductor as its magnetic field collapses is called ____.
13. The center of an inductor, which is either made from insulating or conducting material is called the ____.
14. Which of the following electrical symbols is used to represent the electrical component shown above in a circuit?
23. ELI went to visit ICE and the two really resonated together! As a result, a ???? circuit was born.
27. Two small hollow metal spheres hung on insulating threads attract one another as shown. It is known that a positively charged rod will attract sphere A. Which statements can be correctly concluded about the charge on the spheres?
28. To demonstrate static electricity, a teacher takes an inflated balloon and rubs it against his hair. The rubber balloon picks up electrons from his hair, which makes his hair have
29. A balloon has a negative charge. The glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?
31. If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
33. The transfer of what type of atomic particle is responsible for the static charges on objects?
35. Which of the following does not change in an ordinary transformer........
37. If supply frequency of a transformer increases, the secondary output voltage of the transformer
38. If in an iron cored coil the iron core is removed so as to make the air cored coil, the inductance of the coil will be
46. Inductance value is also affected by permeability, , cross sectional area and____________.
49. The current induced in a second piece of wire develops it's own magnetic field which in turn will induce a current in the original wire of reverse polarity. What is this called?
50. Electromagnetic induction can occur in any conductor, regardless of whether it's a straight piece of wire or coil.
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