Current Electricity Specific resistance of a substance is measured in Ω-m None of the listed here Ω/m m/Ω Ω-m None of the listed here Ω/m m/Ω ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If the efficiency of a machine is to be high, what should be low? Input power True component of power kWh consumed Losses Input power True component of power kWh consumed Losses 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 5 kWh 6 kWh 2 kWh 3.2 kWh 5 kWh 6 kWh 2 kWh 3.2 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity A closed switch has a resistance of About 500 ohms Infinity About 50 ohms Zero About 500 ohms Infinity About 50 ohms Zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Voltage dependent resistors are usually made from Graphite Charcoal Nichrome Silicon carbide Graphite Charcoal Nichrome Silicon carbide ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which method can be used for absolute measurement of resistances? Wheastone bridge method Ohm's law method Lorentz method Releigh method Wheastone bridge method Ohm's law method Lorentz method Releigh method ANSWER DOWNLOAD EXAMIANS APP
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