Question bank: Electricity: Problems of Electric Forces and Fields

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Question 1:

Medium

A small plastic rod electrified with a charge of 2.0 x 10^-7 C is placed 3.0 cm away from point A. The electric field generated by the rod at the position of point A has intensity E. An electron is placed at point A and then released from rest. Determine: (1) The intensity of the electric force acting on the electron. (2) The acceleration of the electron at the moment it is released.

Electricity: Problems of Electric Forces and Fields

Theorical Question

Contextualized Question

Question 2:

Medium

Four equal electric charges, each with charge q, are located at the vertices of a square. What will be the magnitude and direction of the resulting electric field at point P located at the center of the square?

Electricity: Problems of Electric Forces and Fields

Question 3:

Medium

Two point charges, one negative of -5µC and the other positive of +3µC, are fixed at points A and B, respectively, at a distance of 20 cm from each other in a vacuum. An electron is placed at a point located 10 cm from the negative charge and on the same line connecting the charges, forming a right triangle with the charges. The electric field created by the positive charge at B is E_B = k*q_B/r_B², where k is the electrostatic constant in vacuum and q_B is the charge of B. Considering that the electric force on an electron is F = k*e*q/r², where e is the charge of the electron, determine: 1) The intensity of the electric force on the electron due to the positive charge at B. 2) The direction and sense of the resultant electric force acting on the electron. Disregard any effects of electric fields created by the negative charge A acting on the electron.

Electricity: Problems of Electric Forces and Fields

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Calculus Question

Question 4:

Medium

In a uniform electric field, the electric force on a charge is directly proportional to its electric charge, but inversely proportional to the square of the distance between the charges. Considering this information, which statement below is true?

Electricity: Problems of Electric Forces and Fields

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Question 5:

Medium

Electricity: Problems of Electric Forces and Fields

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