Current Electricity The filament of electrical bulb is made of Aluminium Steel Nickel Tungsten Aluminium Steel Nickel Tungsten 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 1.8 x 10-8 ω-m 1.4 x 10-8 ω-m 1.6 x 10-8 ω-m 1.2 x 10-8 ω-m 1.8 x 10-8 ω-m 1.4 x 10-8 ω-m 1.6 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The flow of current in solids is due to Nucleus Atoms Electrons Electrons and ions Nucleus Atoms Electrons Electrons and ions ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A thermistor has Positive temperature coefficient Variable temperature coefficient Zero temperature coefficient Negative temperature coefficient Positive temperature coefficient Variable temperature coefficient Zero temperature coefficient Negative temperature coefficient ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Semi-conductors Insulators Conductors Inductors Semi-conductors Insulators Conductors Inductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Electric current passing through the circuit produces Thermal effect Luminous effect Magnetic effect Chemical effect Thermal effect Luminous effect Magnetic effect Chemical effect ANSWER DOWNLOAD EXAMIANS APP
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