scroll all the way to the bottom: lakeheadschools.ca/scvi_staff/brecka/Gr11_physics_web/downloadable_content/unit12/Text12/phys11_12_6.pdf
How do you figure out which way the motor will spin (figure 12)? And how do you figure out which way the loop will rotate?
And to answer 1. c), how do you even figure out which way the current is going if you don't have any information (which part of the coil is the north pole, which way was the original current direction...)?
Please check these answers:
3. a) increasing the number of loops in the coil would increase the magnetic field
b) a plastic core wouldn't produce a magnetic field
c) decreasing the current would decrease the magnetic field
I need help with these... I think my problem with answering these stems from the issues I stated above.
d) reversing the polarity of the external magnets would ...?
e) reversing the polarity of the external magnets and reversing the direction of the current would...?
1 answer