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Electricity- Class - X - Vasu Classes


1. Which of the following is the best conductor of electricity?




2. When one joule work is done to move a charge from one point to another point, the potential diffrence is one volt , the value of charge must be




3. Conventional direction of current is




4. Potential diffrece between two points is measured by




5. What will be the electric potential of a point when 2 J work is done in bringing a charge of 0.2 C from infinity to the point




6. Which of the following is an alloy?





7. When 3ohm ,7ohm and 2 ohm are connected in parallel the net resistance will be




8. According to Ohm's law




9. The factors on which the resistance of a conductor depends





10. In a series combination of the resistances






11. When resistances are connected in parallel




12. Ohm-m is the unit of




13. How much energy is consumed by an electric geyser of 2KW in 2hrs




14. What is the commercial unit of Electrical energy?




15. Calculate the amount of energy consumed by 2 bulbs of 100watt each and an electric iron 750 Watt in 5 hrs




16. What are the possible net resistance by the combination of three resistances 6 Ohm each




17. Ammeter and Voltmeter are connected in a circuit.These are connected in




18. A metallic wire of length L and area of cross-section A has lowest resistance in which of the following cases?




19. House wiring is done in parallel




20. One coloumb charge flows across the ends of a conductor in one second it means




21. Which one has lower resistance?




22. How many bulbs of 6volt each can be connected in series if the supply voltage is 240V




23. If the distance between two opposite charges is doubled the force between them becomes




24. If a circular loop of wire having resistance 10 Ohm then what will be the resistance across the ends of its diameter




25. An electric refrigerator rated 400W operates 8 hours per day. What is the cost of energy to operate for 30 days at the rate of Rs3.00 per KWH?




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