| 1. | If a current of 2 A passes through a lamp for 200 seconds, the number of coulombs of charge passing through the lamp in that time will be ? | |
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100 C
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200 C
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300 C
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400 C
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Report Question| 2. | A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is ? | |
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100 kV/m
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10 kV/m
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5 kV/m
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2 kV/m
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| 3. | What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ? | |
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It will become magnetic
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It will melt
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It will get punctured or cracked
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Its molecular structure will get changed
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| 4. | The potential gradient across the material of low permittivity is than across the material of high permittivity ? | |
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smaller
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greater
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both (a) and (b)
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none of the above
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| 5. | With steady D.C. voltage from a battery applied to a capacitance, after it charges to the battery voltage, the current in the circuit ? | |
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is smaller for larger values of capacitance
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is greater for larger values of capacitance
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is zero for any capacitance value
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depends on the current rating of the battery
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| 6. | Which of the following material has the highest value of dielectric constant ? | |
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Glass
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Vacuum
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Ceramics
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Oil
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| 7. | For which of the following parameter variation, the capacitance of the capacitor remains unaffected ? | |
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Distance between plates
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Area of the plates
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Nature of dielectric
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Thickness of the plates
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| 8. | Which of the following is not a vector ? | |
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Linear momentum
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Angular momentum
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Electric field
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Electric potential
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| 9. | The direction of electric field due to positive charge is ? | |
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away from the charge
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towards the charge
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both (a) and (b)
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none of the above
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| 10. | The ability of charged bodies to exert force on one another is attributed to the existence of ? | |
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electrons
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protons
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neutrons
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electric field
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