Current Electricity Constantan wire is used for making starndard resistance because it has High specific resistance Negligibly small temperature co-efficient of resistance High melting point Low specific resistance High specific resistance Negligibly small temperature co-efficient of resistance High melting point Low specific resistance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes 1.0 ohm 0.4 ohm 0.8 ohm 0.6 ohm 1.0 ohm 0.4 ohm 0.8 ohm 0.6 ohm ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the number of valence electrons of an atoms is less than 4,the substance is usually An insulator None of the listed here A conductor A semiconductor An insulator None of the listed here A conductor A semiconductor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Sparking occurs when a load is switched off because the circuit has high Impedance Capacitance Resistance Inductance Impedance Capacitance Resistance Inductance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A closed switch has a resistance of Zero About 500 ohms Infinity About 50 ohms Zero About 500 ohms Infinity About 50 ohms ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Electrical current is due to the flow of Both positive and negative charges Positive charges only Negative charges only Neutral particles only Both positive and negative charges Positive charges only Negative charges only Neutral particles only ANSWER DOWNLOAD EXAMIANS APP
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