Current Electricity A rheostat differs from potentiometer in the respect that it Has lower wattage rating Has higher wattage rating Offers large number of tapping Has large number of turns Has lower wattage rating Has higher wattage rating Offers large number of tapping Has large number of turns ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An electrical lamp coonsumes 100 W of power. If the supply voltage is 220 V the energy consumed in 30 minutes is 5 kWh 0.05 kWh 0.005 kWh 5 kWh 5 kWh 0.05 kWh 0.005 kWh 5 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has Low specific resistance Negligibly small temperature co-efficient of resistance High melting point High specific resistance Low specific resistance Negligibly small temperature co-efficient of resistance High melting point High specific resistance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following materials has the least resistivity ? Mercury Zinc Copper Lead Mercury Zinc Copper Lead ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Electric current passing through the circuit produces Thermal effect Luminous effect Chemical effect Magnetic effect Thermal effect Luminous effect Chemical effect Magnetic effect ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Varistors are Resistor with zero temperature co-efficient Carbon resistors Non-linear resistors Insulators Resistor with zero temperature co-efficient Carbon resistors Non-linear resistors Insulators ANSWER DOWNLOAD EXAMIANS APP
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