Potential Energy & Electric Potential

Question 1

∆E

Answer 1

∆K + ∆U

Question 2

Gravitational and Electric forces are

Answer 2

Conservative Forces

Question 3

Conservative Forces

Answer 3

There must exist some potential energy function U(r)

Question 4

Work done by a conservative force is related to

Answer 4

the change in potential energy of the system.

Question 5

Naag

Answer 5

nature abhors a gradient. A particle released in a field will move in the direction of decreasing potential (U(r))

Question 6

Ue=qEs is true for what?

Answer 6

true for parallel plate capacitor

Question 7

Femtometer

Answer 7

10^-15 m

Question 8

∆V=

Answer 8

∆U/qnaught=Potential difference=potential=Electric potential

Question 9

E field lines point in the direction of

Answer 9

decreasing potential - naag

Question 10

∆V=Ed is only true for what?

Answer 10

Uniform fields

Question 11

∆V

Answer 11

is a scalar quantity and exists even if there is no test charge (independent of qnaught).

Question 12

Equipotential surfaces

Answer 12

A collection of points with the same electric potential.

Question 13

Kirchoff’s Loop rule

Answer 13

Loop has 0 electric potential. Path independence.