Uma placed a compass needle in a cardboard tray. She wrapped an electric wire a few times around the cardboard tray and connected it to a cell, switch, and bulb. When the circuit was switched ON, she observed a deflection in the needle from its initial north-south direction. Give the reason for her observation.
Answers
Answered by
3
Answer:
To make a tester of magnetic compass needle, take a matchbox. wrap an electrical wire a few times around the matchbox.
place a small compass needle inside it. now connect one free end of the wire to a terminal of two cell battery. from the other terminal of battery connect another wire. now tester with two free ends of wire is ready.
Principle of working:
when current flows in a wire, a compass needle gets deflected.in other words current carrying wire produces magnetic field around it.
DEAR
MARK AS BRAINLIEST AND GIVE THANKS
VISIT FOR FOLLOW AT :
https://brainly.in/app/profile/9984000
Attachments:
Similar questions