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The self inductance of the motor of an electric fan is 10H. In order to impart maximum power at 50 Hz, it should be connected to a capacitance of

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The self inductance of the motor of an electric fan is 10 H. In order to impart maximum power at 50 Hz, it should be connected to a capacitance of:

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CBSE COMPLEMENTARY MATERIAL-UNIT–III & UNIT–IV MAGNETIC EFFECTS OF CURRENT AND MAGNETISM & E.M.I. AND ALTERNATING CURRENT-SHORT ANSWER QUESTIONS (2 Marks)
  1. The division marked on the scale of an a.c. ammeter are not equally sp...

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  2. Circuit shown here uses an air filled parallel plate capacitor. A mica...

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  3. In the figure shown, coils P and Q are identical and moving apart with...

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  4. An electron is passing through a field but no force is acting on it. U...

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  5. A 1.5 muF capacitor is charged to 57V. The charging battery is then di...

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  6. The self inductance of the motor of an electric fan is 10H. In order t...

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  7. A galvanometer needs 50mV for full scale deflection of 50 Divisions. F...

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  8. A light bulb and an open coil inductor are connected to an ac source t...

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  9. Show that in the free oscillations of an LC circuit, the sum of energi...

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  10. Show that the potential difference across the LC combination is zero a...

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  11. When a large amount of current is passing through solenoid, it contrac...

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  12. Answer the following questions : (a) In any a.c. circuit, is the app...

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  13. A bar magnet M is dropped so that is falls vertically through the coil...

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  14. How does the mutual inductance of a pair of coils change when (i) di...

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  15. Two circular conductors are perpendicular to each other as shown in fi...

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  16. What is a radial magnetic field? Why is it required in a galvanometer ...

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  17. The hysterisis loop of material depends not only on the nature of mate...

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  18. A wire in the form of a tightly would solenoid is connected to a DC so...

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  19. prove that the charge induced does not depend on the rate of change of...

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  20. Consider a magnet surround by a wire with an on// of switch S (figure)...

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