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List two methods of producing magnetic f...

List two methods of producing magnetic fields.

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**Step-by-Step Solution:** 1. **Understanding Magnetic Fields**: A magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts. 2. **Method 1: Using Permanent Magnets**: - Permanent magnets are materials that maintain a persistent magnetic field. - Common examples include bar magnets, which have a north and south pole. - When placed in a space, they create a magnetic field around them without the need for an electric current. ...
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