Current Electricity Sparking occurs when a load is switched off because the circuit has high Capacitance Resistance Inductance Impedance Capacitance Resistance Inductance Impedance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a copper wire 200 m long is 21 ω. If its thickness (diameter) is 0.44 mm, its specific resistance is around 1.2 x 10-8 ω-m 1.4 x 10-8 ω-m 1.6 x 10-8 ω-m 1.8 x 10-8 ω-m 1.2 x 10-8 ω-m 1.4 x 10-8 ω-m 1.6 x 10-8 ω-m 1.8 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A resistance having rating 10 ohms , 10 W is likely to be a Metallic resistor Variable resistor Carbon resistor Wire wound resistor Metallic resistor Variable resistor Carbon resistor Wire wound resistor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A rheostat differs from potentiometer in the respect that it 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 Has lower wattage rating Has higher wattage rating ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has High melting point High specific resistance Negligibly small temperature co-efficient of resistance Low specific resistance High melting point High specific resistance Negligibly small temperature co-efficient of resistance Low specific resistance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity International ohm is defined in terms of the resistance of A cube of carbon A column of mercury A cube of copper The unit length of wire A cube of carbon A column of mercury A cube of copper The unit length of wire ANSWER DOWNLOAD EXAMIANS APP
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