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What is the drift speed of electrons ?...

What is the drift speed of electrons ?

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The electrons in a conductor move with constant average speed, known as drift speed or drift velocity.
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Calculate the drift speed of electrons when 1A of current flows in a copper wire of cross section 2 "min"^2 . The number of free electrons in 1 cm^3 of copper is 8.5 xx 10^(22) .

If the length of a wire conductor is doubled by strctching it while keeping the potential difference constant, by what factor will the drift speed of the electrons change?

(A): The current density remains constant in a conductor of non uniform cross-section, carrying steady current. (R): The drift speed of electrons is cosntant in a conductor of non-uniform cross-sec tion which is carrying current.

A currrent of 5A is passing through a metallic wire of cross sectional area 14xx 10^(-6) m^2 . If the density of the charge carries in the wire is 5 xx 10^(26)//m^3 , find the drift speed of the electrons (charge carries).

Write a formula for electric current in terms of drift speed of electrons.

Is there any relation between emf of battery and drift speed of electrons in the conductor connected to a battery ?

A wire of 5.8 m long, 2 mm diameter carries 750 mA current when 22 mV potential difference is applied at its ends. If drift speed of electrons is found 1.7xx10^(-5) m/s then

VGS PUBLICATION-BRILLIANT-ELECTRIC CURRENT-CONCEPTUAL UNDERSTANDING
  1. When do you say that two or more resistors are connected in parallel?

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  2. What is lattice ?

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  3. What is the drift speed of electrons ?

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  4. Is the voltmeter connected in series or parallel in circuit ? Why ?

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  5. State the use of Ammeter. How to connect the Ammeter in electric circu...

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  6. The home appliance like Fridge ,T.V, Computer are connected in series ...

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  7. Why are copper wires used as connecting wires ?

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  8. Name two special characteristics of fuse wire.

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  9. Name two special characteristics of heating coil.

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  10. What is Resistance ? What are the SI Units of Resistance ?

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  11. When a potential difference 30V is applied across a resistors, it draw...

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  12. Is Ohm's law universally applicable for all condcuting elements? If no...

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  13. Give reasons for using lead in making fuses.

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  14. Define electric current and give an experssion to it.

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  15. What is drift speed ?

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  16. Define emf.

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  17. What are the factors affecting the resistance of a material ?

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  18. Calculate the drift speed of electrons in copper wire carrying a curr...

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  19. How can we decide the direction of electric current in a conductor ?

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  20. A student says "Potential difference and emf are same. Justify your an...

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