Electric Circuits A wire of resistance R has it length and cross - section both doubled. Its resistance will become 4R. 2R. R. 0.5R. 4R. 2R. R. 0.5R. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A 35 V source is connected to a series circuit of 600 Ω and R as shown. If a voltmeter of internal resistance 1.2 kΩ is connected across 600 Ω resistor, it reads 5 V. The value of R is 7.2 k Ω. 3.6 k Ω. 1.2 k Ω. 2.4 k Ω. 7.2 k Ω. 3.6 k Ω. 1.2 k Ω. 2.4 k Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits For balanced star load, if unbalanced line current are IR, IY, IB equal to - j10, - j10 and - j20 respectively, the neutral current will be equal to (8.66 + j5) A. (-9.66 + j5) A. (-8.66 - j5) A. (8.66 - j5) A. (8.66 + j5) A. (-9.66 + j5) A. (-8.66 - j5) A. (8.66 - j5) A. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A cube of material of side 1 cm has a resistance of 0.002 Ω between its opposite faces. If the same volume of the material has a length of 4 cm and a uniform cross - section, the resistance of this length will be 0.016 Ω. 0.032 Ω. 0.128 Ω. 0.064 Ω. 0.016 Ω. 0.032 Ω. 0.128 Ω. 0.064 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is 1. 0.4. 10. 0.85. 1. 0.4. 10. 0.85. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A p.d. of 300 V is applied across series combination of 3 μF and 9 μF capacitors. The charge on each capacitor is ___________________ μC. 675. 240. 3600. 7.5. 675. 240. 3600. 7.5. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS