Melissa and Cassidy built the electromagnetic pictured above they coil a copper wire around a bolt and connected the wire to both ends of a battery when they tested it it could pick up three paper clips their teacher challenge all groups to pick up minimum of 10 paper clips what could they do to increase the number of paper clips there electromagnet picks up a increase the number of loops of wire around the nail B make the wire longer see remove the nail from the center of the wire D spread the loops of wire apart on the nail so they do not touch
To increase the number of paper clips their electromagnet picks up, Melissa and Cassidy could do the following:
A) Increase the number of loops of wire around the nail: By adding more loops, the magnetic field created by the current passing through the wire will be stronger, making the electromagnet more powerful.
B) Make the wire longer: Increasing the length of the wire will also result in an increase in the strength of the magnetic field, thereby increasing the electromagnet's ability to pick up more paper clips.
C) Remove the nail from the center of the wire: Removing the nail would eliminate the ferromagnetic core, significantly weakening the electromagnet. Therefore, this option would not help increase the number of paper clips.
D) Spread the loops of wire apart on the nail so they do not touch: This option would not help increase the number of paper clips as it does not affect the strength of the magnetic field. Keeping the loops of wire apart would only change the distribution of the magnetic field around the nail, but the overall strength would remain the same.