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 0.064 Ω. 0.032 Ω. 0.016 Ω. 0.128 Ω. 0.064 Ω. 0.032 Ω. 0.016 Ω. 0.128 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Resistance of which material does not change with change in temperature? Brass. Tungsten. Platinum. Metal alloys constantan and manganin. Brass. Tungsten. Platinum. Metal alloys constantan and manganin. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The hot resistance of a tungsten lamp is about 10 times the cold resistance. Accordingly, cold resistance of a 100 W, 200 V lamp will be 40 Ω. 400 Ω. 4 Ω. 800 Ω. 40 Ω. 400 Ω. 4 Ω. 800 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits For same voltage, the ratio resistance of 100 W lamp to resistance of 25 W lamp is 1/4. 1. 16. 4. 1/4. 1. 16. 4. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the following has least resistivity? Mercury. Aluminium. Copper. Lead. Mercury. Aluminium. Copper. Lead. ANSWER DOWNLOAD EXAMIANS APP
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