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Biology, 21.07.2019 19:30 jessicad1198

The picture shows an experiment used to determine the effect of using more nails in the core of an electromagnet. which of the following would make this a better designed experiment? a. using a different number of batteries for each electromagnet. b. using the same number of turns of wire for each electromagnet. c. inserting an ammeter in each circuit between the battery and the nails. d. using a different size battery for each electromagnet.

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