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 Amperes × volts Amperes/volt Joules/sec. (Amperes) ohm Amperes × volts Amperes/volt Joules/sec. ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Constantan wire is used for making starndard resistance because it has Negligibly small temperature co-efficient of resistance Low specific resistance High specific resistance High melting point Negligibly small temperature co-efficient of resistance Low specific resistance High specific resistance High melting point 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 10 Ω 11 Ω 9 Ω 12.1 Ω 10 Ω 11 Ω 9 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot wire of electric bulb's filament is higher than its cold resistance because the temperature co-efficient of filament is Negative Positive Zero None of the listed here Negative Positive Zero None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be 3 times 1/3 times 9 times 1/9 times 3 times 1/3 times 9 times 1/9 times ANSWER DOWNLOAD EXAMIANS APP
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