Explanation
The force on electron due to electric field, F= -e E. Therefore, the electron is accelerated opposite to the direction of electric field. Hence velocity of electron at B will be greater than at A.
In the absence of electric field (or potential difference applied) across the conductor, the average thermal velocity of electron is zero.
Applying Kirchhoff’s first law; I = 2 + 2 –1 – 1.3 = 1.7 A
There will be current through the capacitor. Using Kirchhoff’s first law, the current I1 = 2 + 1 =3A and Current I2 = 2 – 1 = 1 A.
As the electrons emitted from G are accelerated by electric field, their speed increases. As the number of electrons emitted per second by the gun is constant,so the current I remains constant. Since I = n A e vd, as I, A and e are constant, while vd increases, hence n will decrease.
Resistivity of a material is its intrinsic property and is constant at particular temperature. Resistivity does not depend upon shape.
Resistivity is the property of the material. It does not depend upon size and shape.
Because with rise in temperature resistance of conductor increases, so graph between V and i becomes no linear.
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