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 11 Ω 12.1 Ω 10 Ω 9 Ω 11 Ω 12.1 Ω 10 Ω 9 Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Conductors Insulators Inductors Semi-conductors Conductors Insulators Inductors Semi-conductors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Resistance of a tungsten lamp _____ as applied voltage increases. Increases Decreases None of the listed here Remains same Increases Decreases None of the listed here Remains same ANSWER DOWNLOAD EXAMIANS APP
Current Electricity It becomes more difficult to remove First electron from the orbit Any electron from the orbit Third electron from the orbit Second electron from the orbit First electron from the orbit Any electron from the orbit Third electron from the orbit Second electron from the orbit ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other? 48 Q 36 Q 18 Q 64 Q 48 Q 36 Q 18 Q 64 Q ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? kWh consumed Losses True component of power Input power kWh consumed Losses True component of power Input power ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS