GED Exam Prep: Science

Category - GED Science

A ____________________ is the magnetic influence of electric currents and magnetic materials.
  1. Pole
  2. Magnetic field
  3. Transformer
  4. Electron
Explanation
Answer: B - A magnetic field is themagnetic influence of electric currents and magnetic materials. Magnetic fields have many uses. The earth has a magnetic field used to make compasses work.
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