I Revision test practise
Quiz by Saranya J
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32 questions
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- Q1What should be the current rating of a fuse to be used with an electric appliance of rating 1.5 kW-220 V?6A5A8A7A30s
- Q2How much heat energy is produced in 10 second in an electric iron having resistance 440 Ω, when a potential difference of 220 volt is applied across it?1100J968000J1200J600J60s
- Q3The resistance of a conductor increases with- I: Increase in length II: Increase in volume III: Decrease in areaII and IIIII onlyI and IIII and II30s
- Q4Earthing is done toto give underground electrical supplysave electricityprotect electrical appliancesprotect human being and other things from electrical shocks60s
- Q51 kWh =3.6 X 10^6 J3600 X 10^6 J3600 J36 X 10^6 J45s
- Q6Two resistors 4Ω and 2Ω are connected in series, and the potential difference of 12 V is applied across the combination. Then, the current through the circuit is:2 A1 A4.5 A4 A60s
- Q7A current of 0.5 A is drawn by a filament of an electric bulb for 10 minutes. The amount of electric charge that flows through the circuit is:3 C3000 C30 C300 C60s
- Q8The electric current flows in a direction opposite to the direction of flow of _______.electronsall of the aboveprotonsneutrons60s
- Q9The resistance of a conductor is said to be 1 ohm if0 ampere current flows through it when the potential difference across the ends is 1 volt1 ampere of current flows through it when the potential difference across the ends is 01 ampere of current flows through it when the potential difference across the ends is 10 volt1 ampere of current flows through it when the potential difference across the ends is 1 volt30s
- Q10What would be the effect on the current if the resistance is increased while the voltage remained constant?Current would increase.Current would remain constant.Current would decrease.Current would increase exponentially.60s
- Q11Electric current will stop flowing when the potential difference isZeroInfinityLowHigh30s
- Q12The SI unit of current is:wattcoulombamperepascal30s
- Q13The atoms of different elements having same mass number, but different atomic numbers are calledisotonesisomersisobarsisotopes30s
- Q14The total number of nucleons isonly protonsonly electronsnumber of protons and neutronsonly neutrons30s
- Q15Protium ,deuterium ,tritium areisotonesIsotopesisomersIsobars30s