Multiple Choice
In the figure, there are three wires carrying currents in the indicated directions, and an Amperian loop.The sign of the contribution of the current in each wire to the path integral in Ampere's Law is:
A) i1 +, i2 -, i3 0
B) i1 -, i2 +, i3 0
C) i1 +, i2 +, i3 -
D) i1 -, i2 -, i3 +
E) i1 +, i2 -, i3 -
Correct Answer:

Verified
Correct Answer:
Verified
Q3: A long straight cylindrical shell carries current
Q8: An ordinary magnetic compass is placed flat
Q16: A square loop of current-carrying wire with
Q18: Two parallel wires, 4 cm apart, carry
Q20: Two parallel wires, 4 cm apart, carry
Q28: A constant current is sent through a
Q30: Two long ideal solenoids (with radii 20
Q33: Magnetic field lines inside the solenoid shown
Q37: Which graph correctly gives the magnitude of
Q42: A 45-m long wire is coiled so