Question
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The electromagnet shown in the image has a wire coiled 5 times around a nail. It can lift up to 7 metal paper clips.
What two changes would cause the electromagnet to increase its electromagnetic force and lift more paper clips?
A. Use smaller and lighter plastic paper clips.
B. Connect a second battery to the experiment.
C. Increase the number of turns of wire on the nail.
D. Increase the length of wire between the battery and the nail,
E. Switch the positive and negative ends of the wire on the battery.
CRESET
SYED SAIFLISLAM, ID#***71 Growth: Science 6-8: for use with NGSS Intl 2013 Question # 19
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