Electric Circuits The resistivity of semi-conductors at room temperatures is 109 to 1012 ohm - cm. 1.6 × 106 to 100 × 106 ohm - cm. 0.01 to 50 ohm - cm. 1000 to 1500 ohm - cm. 109 to 1012 ohm - cm. 1.6 × 106 to 100 × 106 ohm - cm. 0.01 to 50 ohm - cm. 1000 to 1500 ohm - cm. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The voltage induced in an inductor is represented as, ratio of current through it to its inductance. product of its inductance and current through it. product of its inductance and rate of change of current through it. ratio of its inductance to current through it. ratio of current through it to its inductance. product of its inductance and current through it. product of its inductance and rate of change of current through it. ratio of its inductance to current through it. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be 3 / 4 Ω. 3 / 2 Ω. 4 / 3 Ω. 6 Ω. 3 / 4 Ω. 3 / 2 Ω. 4 / 3 Ω. 6 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits In a capacitor, the electrical energy is stored in none of above. magnetic field. both ‘electric field’ and magnetic field’. electric field. none of above. magnetic field. both ‘electric field’ and magnetic field’. electric field. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits Which battery is used in aeroplanes? Edission cell. Lead acid battery. Dry cell battery. None of them. Edission cell. Lead acid battery. Dry cell battery. None of them. ANSWER DOWNLOAD EXAMIANS APP
Electric Circuits If the three colour bands of a resistor are grey, violet and gold, what is the value of the resistor? 8.7 ohms. 6.7 ohms. 7.7 ohms. 9.7 ohms. 8.7 ohms. 6.7 ohms. 7.7 ohms. 9.7 ohms. ANSWER DOWNLOAD EXAMIANS APP
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