Question

When a solenoid is activated, the force that moves the plunger is

• A. an electromagnetic field
• B. a permanent magnetic field
• C. varying voltage
• D. a steady current

Answer 1

The correct option is A an electromagnetic field

When a solenoid is activated the force that moves the plunger is an an electromagnetic field A solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field. If the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.