Current Electricity The hot wire of electric bulb's filament is higher than its cold resistance because the temperature co-efficient of filament is Positive Negative None of the listed here Zero Positive Negative None of the listed here Zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which method can be used for absolute measurement of resistances? Ohm's law method Releigh method Lorentz method Wheastone bridge method Ohm's law method Releigh method Lorentz method Wheastone bridge method 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 1.6 x 10-8 ω-m 1.2 x 10-8 ω-m 1.4 x 10-8 ω-m 1.8 x 10-8 ω-m 1.6 x 10-8 ω-m 1.2 x 10-8 ω-m 1.4 x 10-8 ω-m 1.8 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is 1 1.5 0.5 0.6 1 1.5 0.5 0.6 ANSWER DOWNLOAD EXAMIANS APP
Current Electricity All of the following are equivalent to watt except (Amperes) ohm Joules/sec. Amperes/volt Amperes × volts (Amperes) ohm Joules/sec. Amperes/volt Amperes × volts ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A copper wire has a resistance of 10 Ω. It is stretched by one-tenth of its original length. Then its resistance will be 12.1 Ω 9 Ω 10 Ω 11 Ω 12.1 Ω 9 Ω 10 Ω 11 Ω ANSWER DOWNLOAD EXAMIANS APP
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