Principles of Moments and Magnetism

Principles of Moments and Magnetism

Assessment

Interactive Video

Physics, Mathematics, Science

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial addresses a physics problem involving the turning effect of force on a uniform meter rule balanced at its center. It explains the principle of moments, calculates the magnetic force between two points, and determines the polarity of a magnetic end. The tutorial emphasizes the equilibrium condition where the sum of clockwise moments equals the sum of anti-clockwise moments.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main topic discussed in the video?

The principles of electricity

The laws of thermodynamics

The turning effect of force

The effect of gravity on objects

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What principle is used to solve the problem in the video?

Principle of electromagnetism

Principle of moments

Principle of relativity

Principle of conservation of energy

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the principle of moments, what must be true at equilibrium?

The sum of all forces is zero

The sum of clockwise moments equals the sum of anti-clockwise moments

The sum of kinetic energy is constant

The sum of potential energy is constant

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the calculated magnetic force between Q and P?

25 Newtons

20 Newtons

15 Newtons

10 Newtons

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the magnetic force between Q and P determined?

By measuring the distance between Q and P

By using the principle of moments

By calculating the gravitational force

By using the principle of conservation of energy

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the positive magnetic force calculated?

It indicates a neutral force

It indicates no force

It indicates an attractive force

It indicates a repulsive force

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the lower end of Q is a North Pole, what is the polarity of the end of P facing Q?

North

South

East

West

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