A long straight wire is carrying a constant current in the direction shown in th
ID: 1450434 • Letter: A
Question
A long straight wire is carrying a constant current in the direction shown in the figure. Indicate the magnetic field produced by the straight current wire by adding its direction into the figure shown at right. Determine if a current is included in the rectangular loop for the following cases in which a rectangular loop of wire is moved with constant speed in the vicinity of the straight current-wire. Case A: The magnitude of the magnetic flux through the rectangular loop is increasing constant decrease The induced magnetic field is directed (out of) (into) zero no current is induced a clockwise current is induced a counterclockwise current is in Case B: The magnitude of the magnetic the rectangular loop is increasing constant The induced magnetic field (out of) (into) no current is induced a clockwise current is induced a counterclockwise current is inExplanation / Answer
Case A
a rectangular loop is moved towards a long straight wire acarrying current.
(i) magnitude of magentic flux through the loop is increasing.
(II) induced magnetic field is directed out of plane of paper.
(iii) counter clock-wise current is induced
Case B
a rectangular loop is moved parallel to a long straight wire acarrying current.
(i) magnitude of magentic flux through the loop is constant.
(II) induced magnetic field is zero.
(iii) no current is induced