Current Electricity With rise in temperature the resistance of pure metals Decreases First increases and then decreases Increases Remains constant Decreases First increases and then decreases Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators. Semiconductors Varistors Variable resistors Thermistor Semiconductors Varistors Variable resistors Thermistor ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is 132 V 80 V 66 V 33 V 132 V 80 V 66 V 33 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two lamps 100 W and 40 W are connected in series across 230 V. 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 Voltage dependent resistors are usually made from Graphite Charcoal Silicon carbide Nichrome Graphite Charcoal Silicon carbide Nichrome ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ohm's law is not applicable to Vaccum tubes Circuits with low current densities High voltage circuits Carbon resistors Vaccum tubes Circuits with low current densities High voltage circuits Carbon resistors ANSWER DOWNLOAD EXAMIANS APP
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