1) A group of magnetic fore lines going from the north pole of a magnet to the s

Question

1) A group of magnetic fore lines going from the north pole of a magnet to the south pole is called1) A) force energy C) electromagnetism B) magnetic flux D) permeability 2) A Faradays Law demonstration set up with a stationary magnet and coil is shown. Why is the 2)B voltage display showing zero? A) The magnet is small C) The coil has less number of turns B) The magnet is outside the coil D) none 3) Five time constants are required to fully charge or discharge a capacitor (True/False)? 4) Current lags the voltage by 90 degrees in a capacitor (True/False)? 5) Increasing the plate area of a capacitor increases the capacitance (True/False)? 6) In the waveform shown below, which of the follwoing options represents the rms voltage of the 3) 4) 5) 6) waveform (A, B, C. or D)? Consider three capacitors each of 10 mF. which of the following contin ations of them gives mauma value 7 for the total capacitance of them? A) parallel C) series and parallel B) series D) none 8) 8) What is the total mpedance of a RC circuit shown belowl 10 V rms D) none B) 10 k 9) Inductive reactance opposes a sine wave current, thus reducing the current in the circuit (True/False)?

Explanation / Answer

1. B.

2. B.

3. True.

4. False. Actually, current leads voltage by 90 degree.

5. True.

6. C

7. A.

8. B.

9. True.

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