Circuit Of An Electric Bell For Class 7. Components of an electric bell. Access answers to ncert exemplar for class 7 science chapter 14 electric current and its effects multiple choice questions.
A coil of wire wound over an iron piece that forms the electromagnet. Mcq questions for class 7 science with answers were prepared based on the latest exam pattern. A device that break the electric circuit in case of excess current is called a switch b fuse wire c voltmeter d earth wire b fuse wire.
State the function of each of the following in an electric circuit and draw its symbolic representation.
Working of an electric bell. We have learned quite a lot about that in our past videos. A contact screw through which is attached to the iron strip. The working of an electric bell is based on the concept of magnetic effects of electric current.
