A substance whose molecules consist of dissimilar atoms is called
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Electrical Engineering · all questionsCurrent Electricity
Current Electricity
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If a parallel circuit is opened in the main line, the current
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Out of the following which is an insulating material?
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A nichrome wire used as a heater coil has the resistance of 2 Ω/m. For a heater of 1 kW at 200 V, the length of wire required will be
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Ohm's law is not applicable to
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Ohm’s law is not applicable to
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When electric current passes through a metallic conductor, its temperature rises. This is due to
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The number of electrons in the outer most orbit of carbon atom is
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If I, R and t are the current, resistance and time respectively, then according to Joule’s law heat produced will be proportional to
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What is the answer to this question? The resistance of a few meters of wire conductor in closed electrical circuit is
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Which method can be used for absolute measurement of resistances?
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A field of force can exist only between
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Conductance is reciprocal of
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In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes, using same supply mains
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A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is
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Three identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be
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When current flows through heater coil it glows but supply wiring does not glow because
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Which of the following quantities remain the same in all parts of a series circuit?
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A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is
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International ohm is defined in terms of the resistance of
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