Multiple Choice
When the switch is closed in the circuit shown in the figure,the wire between the poles of the horseshoe magnet deflects upward.From this you can conclude that the left end of the magnet is 
A) a north magnetic pole.
B) a south magnetic pole.
C) There is not enough information given to answer the question.
Correct Answer:
Verified
Correct Answer:
Verified
Q43: When you double the number of windings
Q44: A proton,moving in a uniform magnetic field,moves
Q45: A proton is to orbit Earth at
Q46: A flat rectangular loop of wire is
Q47: A proton,starting from rest,accelerates through a potential
Q49: A proton,moving east,enters a magnetic field.Because of
Q50: Two long parallel wires carry currents of
Q51: A wire in the shape of an
Q52: An electron moves with a speed of
Q53: A circular metal loop of radius 10