Current Electricity Resistance of a material always decreases if Temperature of material is decreased Number of free electrons available becomes more Temperature of material is increased None of these Temperature of material is decreased Number of free electrons available becomes more Temperature of material is increased None of these ANSWER DOWNLOAD EXAMIANS APP
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 1.2 x 10-8 ω-m 1.6 x 10-8 ω-m 1.8 x 10-8 ω-m 1.4 x 10-8 ω-m 1.2 x 10-8 ω-m 1.6 x 10-8 ω-m 1.8 x 10-8 ω-m 1.4 x 10-8 ω-m ANSWER DOWNLOAD EXAMIANS APP
Current Electricity An instrument which detects electric current is known as Voltmeter Rheostat Galvanometer Wattmeter Voltmeter Rheostat Galvanometer Wattmeter ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Eureka has _______ temperature co-efficient of resistance. Negative Positive None of the listed here Almost zero Negative Positive None of the listed here Almost zero ANSWER DOWNLOAD EXAMIANS APP
Current Electricity If an electric current is passed through a nerve, the man Begins to laugh Becomes insensitive to pain Is excited Begins to weep Begins to laugh Becomes insensitive to pain Is excited Begins to weep ANSWER DOWNLOAD EXAMIANS APP
Current Electricity The rating of a fuse wire is always expressed in Ampere-volts kWh Amperes Ampere-hours Ampere-volts kWh Amperes Ampere-hours ANSWER DOWNLOAD EXAMIANS APP
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