Current Electricity If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes 0.8 ohm 0.6 ohm 1.0 ohm 0.4 ohm 0.8 ohm 0.6 ohm 1.0 ohm 0.4 ohm 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 3.2 kWh 6 kWh 2 kWh 5 kWh 3.2 kWh 6 kWh 2 kWh ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Current velocity through a copper conductor is of the order of a few ^.s/m independent of current strength nearly 3 x 108 m/s the same as propagation velocity of electric energy of the order of a few ^.s/m independent of current strength nearly 3 x 108 m/s the same as propagation velocity of electric energy ANSWER DOWNLOAD EXAMIANS APP
Current Electricity In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is 66 V 33 V 80 V 132 V 66 V 33 V 80 V 132 V ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two lamps 100 W and 40 W are connected in series across 230 V. Which of the following statement is correct? 40 W lamp will fuse Both lamps will glow equally bright 100 W lamp will glow brighter 40 W lamp will glow brighter 40 W lamp will fuse Both lamps will glow equally bright 100 W lamp will glow brighter 40 W lamp will glow brighter ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be 3 times 1/9 times 1/3 times 9 times 3 times 1/9 times 1/3 times 9 times ANSWER DOWNLOAD EXAMIANS APP
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