## Licensing

Licensed under the CC BY 4.0

##### Child pages
• PhET Faraday's Law - Grab and Release Interaction Sketch

# Page History

## Key

• This line was removed.
• Formatting was changed.

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• Adds another step to the interaction.

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## PDOM Sketch

### Faraday's Law (h2, Scene Summary)

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The coil is sideways, with openings on the left and right.

#### Bar Magnet

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Remove "Use the W A S D keys to move the magnet in four directions. Use 1 2 3 keys to slide magnet left and right."

#### (h3)

One CoilTwo CoilsRelative Coil Proximity Values

The bar magnet is (relative coil proximity)* 4 loop coil.

North pole on left. South pole on right.

The bar magnet is (relative coil proximity)* 4 loop coil.

The bar magnet (relative coil proximity)* 2 loop coil.

North pole on left. South pole on right.

• (just) above
• (just) below
• (just) left of
• (just) right of
• touching
• inside

*Two proximity values can be used to describe location - above/below, and left/right. See examples below.

Examples:

• One coil: "The bar magnet is above and just left of the 4 loop coil."
• Two coils: "The bar magnet is above and just left of the 4 loop coil. The bar magnet is below and just left of the 2 loop coil."
• Directly below one coil: "The bar magnet is below the 4 loop coil."
• Directly right one coil: "The bar magnet is just right of the 4 loop coil."

Special case: Magnet above / below and far from both coils

• "The bar magnet is above / below both the 4 loop and 2 loop coils."

Special case: Magnet above / below and closer to one coil than the other

• "The bar magnet is below both coils, but is closer to the 4 loop coil."
• "The bar magnet is above both coils, but is closer to the 2 loop coil."

#### Field Lines (h3)

One CoilTwo CoilsField strength values
The magnet field strength is (field strength) at the 4 loop coil.

The magnet field strength is:

• (field strength) at the 4 loop coil
• (field strength) at the 2 loop coil

Very strong

Strong

Weak

## Example interaction with Pick-up and Drop

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The following is used to describe the magnet location when it is released.

Statement Structure:

• One If one coil: (Direction) + (Coil Type)
• Two If two coils: (Direction) + (Coil Type) (Direction) + (Coil Type)

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