Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is About 2 ohms per degree Zero Positive Negative About 2 ohms per degree Zero Positive Negative ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The electrical energy required to heat a bucket of water to a certain temperature is 4 kWh. If the heat losses are 20 percent, the energy input is 2 kWh 3.2 kWh 5 kWh 6 kWh 2 kWh 3.2 kWh 5 kWh 6 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The substances which have a large number of free electrons and offer a low resistance are called Inductors Semi-conductors Conductors Insulators Inductors Semi-conductors Conductors Insulators ANSWER DOWNLOAD EXAMIANS APP
Current Electricity When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will Increase Decrease None of these Remain constant Increase Decrease None of these Remain constant ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The insulation on a current carrying conductor is provided To prevent shock None of above factors To prevent leakage of current Both of the listed here To prevent shock None of above factors To prevent leakage of current Both of the listed here ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following statement is true both for a series and a parallel D.C. circuit? Currents are additive Power are additive Voltages are additive Elements have individual currents Currents are additive Power are additive Voltages are additive Elements have individual currents ANSWER DOWNLOAD EXAMIANS APP
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