- Download PDF
1 Answer | Add Yours
When a piece of iron is placed inside a solenoid which is carrying current, the iron becomes strongly magnetized. The strength of the magnet will depend on: (a) the number of turns in the coil; the larger the number the stronger the magnetism; (b) the strength of the current-the larger the current the stronger the field; and (c) the nature of core material. When the current is switched off, the iron ceases to be a magnet. This arrangement is called an electromagnet. It is an essential part of electric generators, motors, telegraph instruments, loudspeakers, earphones and telephone receivers.
We’ve answered 319,219 questions. We can answer yours, too.Ask a question