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7th Grade Science dipping needle electromagnet divining rod safety hazard magnetic compass 5Electricity produced by magnetism is called _____. AC current electomagnetic induction static electricity none of these 2A _____ changes high voltage into low voltage or vice versa. generator magnet transformer power meter voltmeter 3You have eleven 100 watt light bulbs onfor 30 hrs. How many kwh have you used?33 330 3300 33000 33300 1What can change electrical impulses into sound waves? loud speaker microphone telephone video recorder all of these 1You get heat from electricity by using a wire that ____ electricity. conducts generates moves with resists 4We use electricity to produce ____. heat motion sound all of these none of these 4What device consists of a coil of wire around a movable iron core? loudspeaker neon light solenoid toaster none of these 3Today the most common electric light isthe _____ lamp. fluorescent incandescent neon all of these none of these 2A 60-cycle current changes direction ____ times a second. 2 30 60 120 240 4A magnetic needle mounted so it swings freely in the horizontal plane is a __.dipping needle electromagnet divining rod safety hazard magnetic compass 5