Electricity Magnetic and Heating Effects Class 8 Very Short Question Answer
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Electricity Magnetic and Heating Effects Class 8 Very Short Question Answer
Electricity Magnetic and Heating Effects Class 8 Very Short Question Answer
Question 1.
What is the magnetic effect of electric current?
Answer:
It produces a magnetic field around a conductor.
Question 2.
What happens when the circuit is closed in an electromagnet?
Answer:
It attracts magnetic materials like iron.
Question 3.
Why is nichrome wire used in heating devices?
Answer:
It generates more heat for a given current.
Question 4.
What happens to a compass near a current-carrying wire?
Answer:
The compass needle deflects due to the magnetic field.
Question 5.
What is the role of an iron core in an electromagnet?
Answer:
It strengthens the magnetic field produced.