11. Which of the following materials has the least resistivity ?
12. Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open
13. Two bulbs of 500 W and 200 W rated at 250 V will have resistance ratio as
14. For testing appliances, the wattage of test lamp should be
15. A rheostat differs from potentiometer in the respect that it
16. Are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators.
17. In a series circuit with unequal resistances
18. The resistance of a conductor varies inversely as
19. A resistance having rating 10 ohms, 10 W is likely to be a
20. If the efficiency of a machine is to be high, what should be low?
Read More Section(Current Electricity)
Each Section contains maximum 100 MCQs question on Current Electricity. To get more questions visit other sections.