Current Electricity What voltage drop will be there across a 1 kW electric heater whose resistance when hot is 40 Ω? 200 V 100 V 150 V 50 V 200 V 100 V 150 V 50 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A rheostat differs from potentiometer in the respect that it Has higher wattage rating Has lower wattage rating Offers large number of tapping Has large number of turns Has higher wattage rating Has lower wattage rating Offers large number of tapping Has large number of turns ANSWER DOWNLOAD EXAMIANS APP
Current Electricity One Newton meter is same as One joule second Five joules One joule One watt One joule second Five joules One joule One watt ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is 600 Ω 800 Ω 1000 Ω 400 Ω 600 Ω 800 Ω 1000 Ω 400 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In which of the following substances the resistance decreases with increase in temperature? Constantan Silver Carbon Copper Constantan Silver Carbon Copper ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two lamps 100 W and 40 W are connected in series across 230 V (alternating). Which of the following statement is correct? 100 W lamp will glow brighter 40 W lamp will fuse Both lamps will glow equally bright 40 W lamp will glow brighter 100 W lamp will glow brighter 40 W lamp will fuse Both lamps will glow equally bright 40 W lamp will glow brighter ANSWER DOWNLOAD EXAMIANS APP
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