Current Electricity Voltage dependent resistors are usually made from Charcoal Silicon carbide Nichrome Graphite Charcoal Silicon carbide Nichrome Graphite 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? 40 W lamp will fuse Both lamps will glow equally bright 40 W lamp will glow brighter 100 W lamp will glow brighter 40 W lamp will fuse Both lamps will glow equally bright 40 W lamp will glow brighter 100 W lamp will glow brighter ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Ohm's law is not applicable to Semi-conductors High currents Small resistors Dc circuits Semi-conductors High currents Small resistors Dc circuits ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A field of force can exist only between Two molecules Two atoms Two metal particles Two ions Two molecules Two atoms Two metal particles Two ions ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? Losses kWh consumed Input power True component of power Losses kWh consumed Input power True component of power ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In which of the following substances the resistance decreases with increase in temperature? Carbon Silver Copper Constantan Carbon Silver Copper Constantan ANSWER DOWNLOAD EXAMIANS APP
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