Current Electricity The resistance of a copper wire 200 m long is 21 ω. If its thickness (diameter) is 0.44 mm, its specific resistance is around 1.4 x 10-8 ω-m 1.8 x 10-8 ω-m 1.2 x 10-8 ω-m 1.6 x 10-8 ω-m 1.4 x 10-8 ω-m 1.8 x 10-8 ω-m 1.2 x 10-8 ω-m 1.6 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Specific resistance of a substance is measured in m/Ω None of the listed here Ω-m Ω/m m/Ω None of the listed here Ω-m Ω/m 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 6 kWh 5 kWh 3.2 kWh 2 kWh 6 kWh 5 kWh 3.2 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In a series circuit with unequal resistances The highest resistance has the highest voltage drop The lowest resistance has the highest current The lowest resistance has the highest voltage drop The highest resistance has the most of the current through it The highest resistance has the highest voltage drop The lowest resistance has the highest current The lowest resistance has the highest voltage drop The highest resistance has the most of the current through it ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators. Variable resistors Thermistor Semiconductors Varistors Variable resistors Thermistor Semiconductors Varistors ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Nichrome wire is an alloy of Lead and zinc Chromium and vanadium Copper and silver Nickel and chromium Lead and zinc Chromium and vanadium Copper and silver Nickel and chromium ANSWER DOWNLOAD EXAMIANS APP
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