Magnetic Fields and Forces Concepts

The video tutorial covers example number nine, focusing on determining the direction of magnetic force using the right hand rule. It reviews the rule, where fingers represent the magnetic field direction, the thumb indicates current direction, and the palm shows force direction. The tutorial goes through several examples, explaining how to find the force direction in different scenarios, including when the current and magnetic field are aligned, when the field is up and current is right, and when using a horseshoe magnet. Each example demonstrates the application of the right hand rule to solve for unknown quantities.

What does the thumb represent in the right-hand rule?

• Direction of the velocity

• Direction of the force

• Direction of the electrical current

• Direction of the magnetic field

In example 1a, if the fingers point to the right and the thumb points upwards, where does the force act?

• Into the page

• Out of the page

• To the left

• To the right

What happens to the magnetic force when the current and magnetic field are in the same direction?

• The force is perpendicular

• The force is maximized

• The force is minimized

• There is no magnetic force

In example 1c, if the magnetic field is upwards and the current is to the right, where is the force directed?

• To the left

• Out of the page

• To the right

• Into the page

In the context of a U-shaped horseshoe magnet, which direction do the magnetic field lines travel?

• From north to south

• From right to left

• From left to right

• From south to north

In example f, if the force is downwards and the magnetic field is to the right, where does the current go?

• Out of the page

• Into the page

• To the left

• To the right

In example g, if the force is upwards and the current goes into the page, where is the magnetic field directed?

• To the left

• To the right

• Upwards

• Downwards

In example h, if the current is coming out towards you and the force is downwards, where is the magnetic field directed?

• To the left

• To the right

• Upwards

• Downwards

In example i, if the force is upwards and the magnetic field is to the left, where does the current go?

• Out of the page

• Into the page

• To the left

• To the right

What is the direction of the magnetic field in example i?

• Upwards

• Downwards

• To the left

• To the right