| 1. | The direction of the lines of force at any point is the direction along which a unit ....... charge placed at that point would move if free to do so ? | |
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positive
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negative
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both of the above
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none of the above
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Report Question| 2. | The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by ? | |
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C/R
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1/RC
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RC
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R/C
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| 3. | Voltage applied across a dielectric produces an electrostatic field. 50 times greater than air. The dielectric constant of the dielectric will be ? | |
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5
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10
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20
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50
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| 4. | For a good 0.05 ?F capacitor ohmmeter reading should ... ? | |
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show low resistance momentarily and back off to a very high resistance
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show high resistance momentarily and then a very low resistance
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go quickly to 50 ohm approximately and remain there
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not move at all
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| 5. | In case of lossy capacitor, its series equivalent resistance value will be ? | |
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large
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small
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very small
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negligible
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| 6. | If the dielectric of a capacitor is replaced by a conducting material ? | |
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the capacitance value of the capacitor will shoot upto very high value
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the capacitor can store infinite charge
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the plates will get short-circuited
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the capacitor will get heated up due to eddy currents
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| 7. | An uncharged conductor is placed near a charged conductor, then ? | |
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the uncharged conductor gets charged by conduction
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the uncharged conductor gets charged by induction and then attracted towards the charging body
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the uncharged conductor is attracted first and then charged by induction
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it remains as such
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| 8. | A capacitance of 100 ?F is connected in series with a resistance of 8000 '2. The time constant of the circuit is ? | |
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0.2 s
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0.4 s
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0.6 s
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0.8 s
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| 9. | The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as ...... ? | |
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photoelectric effect
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chemical effect
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magnetic effect
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induction
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| 10. | It was suggested by ..... that the electric field should be imagined to be divided into tubes of force containing a fixed number of lines of force ? | |
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Kelvin
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Newton
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Faraday
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All of the above
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