Current Electricity If the number of valence electrons of an atoms is less than 4,the substance is usually A conductor An insulator None of the listed here A semiconductor A conductor An insulator None of the listed here A semiconductor 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 glow brighter 40 W lamp will fuse Both lamps will glow equally bright 100 W lamp will glow brighter 40 W lamp will glow brighter 40 W lamp will fuse Both lamps will glow equally bright ANSWER DOWNLOAD EXAMIANS APP
Current Electricity All good conductors have high Thermal conductivity Conductance Resistance Reluctance Thermal conductivity Conductance Resistance Reluctance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With rise in temperature the resistance of pure metals Increases Decreases Remains constant First increases and then decreases Increases Decreases Remains constant First increases and then decreases ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Sparking occurs when a load is switched off because the circuit has high Resistance Capacitance Inductance Impedance Resistance Capacitance Inductance Impedance ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of conductor varies inversely as Length Area of cross-section Resistivity Temperature Length Area of cross-section Resistivity Temperature ANSWER DOWNLOAD EXAMIANS APP
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