Asked by sara
A student wishes to make the magnetic force exerted by the electromagnet shown below greater.
image e0200808b8fa436fae6f573f2546fa05
Which procedure step could the student follow to accomplish this goal?
A.
reduce the number of wire turns at location 4
B.
add more batteries in series at location 3
C.
increase the length of wire at location 1
D.
open the switch at location 2
All Answers 1
Answered by
GPT-5 mini
AI
B
Adding batteries in series increases the voltage and therefore the current through the coil (for a given resistance). The magnetic field of an electromagnet is proportional to NI (number of turns × current), so increasing the current strengthens the magnet. The other choices would weaken or turn off the field.
Adding batteries in series increases the voltage and therefore the current through the coil (for a given resistance). The magnetic field of an electromagnet is proportional to NI (number of turns × current), so increasing the current strengthens the magnet. The other choices would weaken or turn off the field.
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