Motor and Generator Effect
A current carrying wire establishes a magnetic field around the wire. How can the magnetic field be increased?
increase the current through the wire, increase the number of loop in the coil, use stronger magnet
Please state the best description how a loudspaker is construced !
an electromagnet, a permanent magnet and a vibrating paper cone
What is the role of the split-ring commutator in an electric motor?
Reverse the direction of current for every half turn.