Physics
How is the working of an electric bell affected, if alternating current be used instead of direct current?
Related Questions
State two differences between an electromagnet and a permanent magnet.
Why is soft iron used as the core of the electromagnet in an electric bell?
Name the material used for making the armature of an electric bell. Give a reason for your answer.
By using a compass needle describe how can you demonstrate that there is a magnetic field around a current carrying conductor.