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If one mole of electrons is passing from...

If one mole of electrons is passing from point P to another point Q on a straight metal wire in time interval of 1 ms, then what will be the magnitude of current in the wire ? What is the direction of current ?

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To solve the problem, we need to calculate the magnitude of the current flowing through the wire when one mole of electrons passes from point P to point Q in a time interval of 1 millisecond. ### Step 1: Calculate the total charge (Q) One mole of electrons contains Avogadro's number of electrons, which is approximately \(6.022 \times 10^{23}\) electrons. The charge of a single electron is approximately \(1.6 \times 10^{-19}\) coulombs. The total charge (Q) can be calculated using the formula: \[ Q = n \times e ...
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MODERN PUBLICATION-CURRENT ELECTRICITY-Chapter Practice Test
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  2. Is current density a vector or a scalar? Express its relation with ele...

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  3. State the direction of drift velocity of electron with respect to the ...

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  4. Why is manganin preferred over conductors like copper to construct sta...

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  5. Is the graph showing variation of current versus voltage for a diode l...

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  6. On increasing the temperature of a copper conductor, its resistivity i...

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  7. Prove that the current density of a metallic conductor is directly pro...

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  8. Deduce Ohm's law using the concepts of drift velocity and relaxation t...

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  9. Define mobility of a charge carrier.What is its relation with relaxati...

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  10. Write the sequence of colours in a carbon resistor having resistances ...

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  11. A cell of emf E and internal resistance r is connected across an exter...

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  12. State the principle of potentiometer. Draw a circuit diagram used to c...

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  13. With the help of a circuit diagram, explain the working principle of a...

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  14. Obtain the condition for bridge balance in Wheatstone's bridge.

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  15. Answer the following : (a) Why are the connections between the resi...

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  16. n-identical cells each of emf E and internal resistance r are connecte...

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