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What is a fuse ? Name the material of fu...

What is a fuse ? Name the material of fuse. State one characteristic of the material used for fuse.

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No. `V_d = i/(neA)` For a given material n and e are constants. But `V_d` depends on the amount of current i flowing through the conductor and also on the area of cross section A.
That is why we find `v_d ~ 10^(-3) ms^(-1)` etc. with different orders of magnitude for copper.
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE (VERY ANSWER QUESTIONS)
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  2. The direction of the flow of current through electric circuit is

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  4. A given conductor has got different areas of cross section. From the f...

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  5. A beam of electrons projected along + x-axis , experiences a force due...

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  6. When no external electric field is applied (that is when no current is...

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  7. Define the term 'drift velocity of electrons in a current carrying con...

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  8. Find AD, if : (i)

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  9. What is a non-ohmic resistor ?

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  10. A battery of emf 2V and internal resistance 0.5(Omega)is connected acr...

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  14. Define drift velocity of charge carriers in a conductor. Mention the u...

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  15. Define mobility of charge carriers in a conductor. Mention the units o...

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  16. A given conductor has got different areas of cross section. From the f...

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  17. State and explain Ohm.s law and hence defined one ohm.

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  18. Differentiate between ohmic and non -ohmic devices .

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  19. Define one ohm.

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