Current Electricity A closed switch has a resistance of Zero About 500 ohms Infinity About 50 ohms Zero About 500 ohms Infinity About 50 ohms 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 9 times 1/9 times 3 times 1/3 times 9 times 1/9 times 3 times 1/3 times ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is Negative Positive Zero About 2 ohms per degree Negative Positive Zero About 2 ohms per degree ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A copper wire is stretched so that its length is increased by 0.1 % . The change in its resistance is None of the listed here 0.3% 0.4% 0.2% None of the listed here 0.3% 0.4% 0.2% ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of two wires is 25 Ω when connected in series and 6 Ω when joined in parallel. The resistance of each wire is 10 Ω, 20 Ω 20 Ω, 30 Ω 5 Ω, 10 Ω 10 Ω, 15 Ω 10 Ω, 20 Ω 20 Ω, 30 Ω 5 Ω, 10 Ω 10 Ω, 15 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the number of valence electrons of an atoms is less than 4,the substance is usually A semiconductor An insulator A conductor None of the listed here A semiconductor An insulator A conductor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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