E. Short Answer Questions :
1. What are electromagnets?
2. What is a switch?
3. What is short circuit?
Answers
Answer:
1) a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.
2)In electrical engineering, a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit, interrupting the electric current or diverting it from one conductor to another.
3)an electrical circuit in a device of lower resistance than that of a normal circuit, especially one resulting from the unintended contact of components and consequent accidental diversion of the current.
Answer:
An electromagnet is a magnet is a magnet that runs on electricity . Unlike a permanent magnet , the strength of a electromagnet can easily be changed by changing the amount of electric current that flows through it .