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 0.128 Ω. 0.016 Ω. 0.064 Ω. 0.032 Ω. 0.128 Ω. 0.016 Ω. 0.064 Ω. 0.032 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The current in a chemical cell is a movement of positive hole charges. positive and negative ions. positive ions only. negative ions only. positive hole charges. positive and negative ions. positive ions only. negative ions only. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the followings is the expression for energy stored in a capacitor? C / v. C dv / dt. (1 / 2) Cv2. Cv. C / v. C dv / dt. (1 / 2) Cv2. Cv. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which of the following may be value of resistivity of copper? 1.7 X 10 - 5. 1.7 X 10 - 6. 1.7 X 10 - 4. 1.7 X 10 - 3. 1.7 X 10 - 5. 1.7 X 10 - 6. 1.7 X 10 - 4. 1.7 X 10 - 3. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A capacitor has a capacitance of 6 μF. Calculate the stored energy in it if a DC voltage of 100 V, is applied across it? 2.5 × 102 joules. 3 × 102 joules. 4 × 102 joules. 6 × 102 joules. 2.5 × 102 joules. 3 × 102 joules. 4 × 102 joules. 6 × 102 joules. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits A parallel plate capacitor contain there dielectric layers of 1, 2 and 3 respectively and thickness of dielectric layers are 0.2 mm, 0.3 mm and 0.4 mm respectively. If area of plate is 20 cm2. What is the value of capacitance? 30 pF. 32 pF. 36.6 pF. None of them. 30 pF. 32 pF. 36.6 pF. None of them. ANSWER DOWNLOAD EXAMIANS APP
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