A long straight wire carries a current of `2A`. An electron travels with a velocity of `4xx10^4ms^-1` parallel to the wire `0*1mm` from it, and in a direction opposite to the current. What force does the magnetic field of current exert on the moving electron. Charge on electron `=1*6xx10^(-19)C`.

A long straight wire carries a current of `2A`. An electron travels wi

1.	A long straight wire carries a current of `2A`. An electron travels with a velocity of `4xx10^4ms^-1` parallel to the wire `01mm` from it, and in a direction opposite to the current. What force does the magnetic field of current exert on the moving electron. Charge on electron `=16xx10^(-19)C`.
Answer» Correct Answer - `256xx10^(-20)N`, towards the conductor `B=(mu_0)/(4pi)(2I)/(r)=10^-7xx(2xx2)/(01)=4xx10^-6T` When electron travles parallel to the conductor, `vecB` is perpendicular to `vecv`(i.e. `theta=90^@`) `:. F=evBsintheta` `=16xx10^(-19)xx4xx10^4xx4xx10^-6xxsin90^@` `=256xx10^(-20)N` This force will be acting towards the conductor.

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A long straight wire carries a current of `2A`. An electron travels with a velocity of `4xx10^4ms^-1` parallel to the wire `0*1mm` from it, and in a direction opposite to the current. What force does the magnetic field of current exert on the moving electron. Charge on electron `=1*6xx10^(-19)C`.

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A long straight wire carries a current of `2A`. An electron travels with a velocity of `4xx10^4ms^-1` parallel to the wire `01mm` from it, and in a direction opposite to the current. What force does the magnetic field of current exert on the moving electron. Charge on electron `=16xx10^(-19)C`.