اختبار الكتروني درس Magnetism & electricity

1
when the compass is put beside a wire carrying an electric current ………………
2
the magnet which is made by the effect of electricity is called ………..
3
magnetic effect of the electric current can be detected by using …..
4
the idea of operating the electromagnet is the changing of …………
5
the bar used in the electromagnet is made up of ….
6
the electromagnet is composed of ……………..
7
…..is/are from the uses of the electromagnet
8
the magnetic force of the electromagnet will be lost by……
9
the magnetic force of the electromagnet increases by….
10
all the following divices have an electromagnet inside them except the ….