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  • Please,please help me One billion electrons pass from A to B in 1 ms. What is the direction and magnitude of current?

One billion electrons pass from A to B in 1 ms. What is the direction and magnitude of current?

  • Option 1)

    1.6 A

  • Option 2)

    0.8 mA

  • Option 3)

    0.16 mA

  • Option 4)

    1.6 mA 

 

Answers (1)

best_answer

As we learnt

 

Translatory motion of charge -

 

i=nqA

- wherein

n particles charge q pass per second per unit area , The current associated with cross-section area A

 

 

i = \frac{{Ne}}{t} = \frac{{({{10}^9})\,(1.6\,x\,{{10}^{ - 19}}\,C)}}{{{{10}^{ - 3}}}} = 1.6\,x\,{10^{ - 7}}\,A$ 
Þ  i = 0.16 m A.

            The current flows from B to A.

 


Option 1)

1.6 A

Option 2)

0.8 mA

Option 3)

0.16 mA

Option 4)

1.6 mA 

Posted by

Aadil

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