Please select a subject first
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In transferring 1.5 C charge through a wire, 9 J of work is needed. Find the potential difference across the wire.
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A cell of potential difference 12 V is connected to a bulb. The resistance of filament of bulb when it glows is 24Ω. Find the current drawn from the cell.
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A bulb draws current 1.5 A at 6.0 V. Find the resistance of filament of bulb while glowing.
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A current 0.2 A flows in a wire of resistance 15Ω. Find the potential difference across the ends of the wire.
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At what temperature the pure water has (a) maximum density (b) minimum volume?
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Select the correct option:
Which is not a unit of distance?
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What do you understand by the term unit?
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What do you understand by the term magnitude, as applied to a physical quantity?
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Why are physical quantities expressed in the order of magnitude? Support your answer by an example.
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There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
Which sphere is at higher potential before electrical contact on the basis of convention?
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There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
Which sphere is at lower potential before electrical contact on the basis of convention?
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There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
In which direction conventional current flows?
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There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
In which direction electronic current flows?
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There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
What is the potential of the spheres after electrical contact?
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What do you understand by the term electric potential?
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Define electric potential in terms of energy spent.
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State the unit of electric potential and define it.
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What do you understand by the term quantity of electric charge?
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State SI unit of electric charge and define it.
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How many electrons constitute one unit electric charge in SI system?
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