1) The magnet which is made by the the effect of electricity is called…… a) Natural magnet b) Magnetic substance c) Electromagnet d) Non magnetic substance 2) The idea of operating the electromagnet is the changing of …….. a) Kinetic energy into electric energy b) Electric energy into mechanical energy c) Magnetic energy into mechanical energy d) Electric energy into magnetic energy 3) The bar used in the electromagnet is made up of ……. a) Aluminium b) Wrought iron c) Steel d) Copper 4) ……. Is not from the uses of the electromagnet a) Moving iron blocks in factories b) Making an electric mixer c) Making an electric generator d) Making an electric bell 5) The magnetic force of the electromagnet will be lost by …… a) Increasing the number of coil turns b) Increasing the number of batteries c) Cutting the electric current d) Switching on the key 6) The electromagnet is composed of all the following parts except …… a) A copper wire b) A bar of wrought iron c) A battery d) A natural magnet 7) All the following devices have an electromagnet inside them except the ……. a) Electric bell b) Television c) Disc drive d) Refrigerator 8) The magnetic force of the electromagnet increases by …… a) Increasing the number of coil b) Decreasing the intensity of the electric current c) Cutting off the electric current d) Decreasing the number of coil turns

Closing: Electromagnet

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