The potential as a function of positions is shown in the graph in the figure. Wh

Question

The potential as a function of positions is shown in the graph in the figure. Which about the electric field is true? the electric field is zero at x= 5 cm, its magnitude is at a maximum at x = 0, and the field is directed to the right there. the electric field is zero at x= 0, its magnitude is at a maximum at x = 5 cm, and the field is directed to the right there. the electric field is zero at x= 0, its magnitude is at a maximum at x = 15 cm, and the field is directed to the left there. the electric field is zero at x= 10 cm, its magnitude is at a maximum at x = 5 cm, and the field is directed to the left there. the electric field between square the plates of a parallel-plate capacitor has magnitude E. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to 2E. E E/4 4E. A conducting sphere of radius R carries an excess positive charge and is very far from any other charges. Which one of the following graphs best illustrates the potential (relative to infinity) produced by this sphere as a function of the distance r from the center of the sphere?

Explanation / Answer

9) Correct option is (a)

E =-dV/dx

so E is zero at x=5 cm and maximum at x=0 cm

10) Correct option is (E)

E =V/d

d2=2d1

potential V is constant

E2 =E/2

11) Correct option is (b)

Inside conductor electric potential is zero.

after the surface potential changes as V = kq/r

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