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Electrostatics Concepts and Calculations

Electrostatics Concepts and Calculations

Assessment

Interactive Video

Physics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial covers a typical exam question on electrostatics, focusing on drawing electric field patterns, calculating excess electrons, determining electrostatic force, and computing electrical potential energy between charged spheres. The tutorial emphasizes the importance of understanding key terms and equations to solve these problems effectively.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the direction of the electric field lines around a negatively charged sphere?

Circular around the sphere

Inwards radially

Outwards radially

Parallel to the surface

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the number of excess electrons on a charged sphere?

Subtract the charge of an electron from the charge

Add the charge to the charge of an electron

Divide the charge by the charge of an electron

Multiply the charge by the charge of an electron

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the charge of an electron typically given as?

-1.6 * 10^-19 C

1.6 * 10^-19 C

-1.6 * 10^-9 C

1.6 * 10^-9 C

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which equation is used to calculate the electrostatic force between two charged spheres?

F = ma

F = qE

F = mv^2/r

F = k(q1q2)/r^2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of electrostatic force?

Volts

Coulombs

Newtons

Joules

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the charge on each sphere after they are brought into contact and then separated?

The charges remain the same

The charges are redistributed equally

The charges are doubled

The charges are neutralized

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which equation is used to calculate the electrical potential energy between two charged spheres?

U = k(q1q2)/r

U = qV

U = 1/2 CV^2

U = mgh

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