a. The magnetic flux through a closed surface surrounding only the south pole of

Question

a. The magnetic flux through a closed surface surrounding only the south pole of a bar magnet is always greater than zero.

b. The magnetic flux through a fixed circular loop is maximum if the magnetic field is oriented perpendicular to the plane of the loop.

c. An EMF is induced in a loop of conducting wire if the magnetic flux through the loop changes with time.

d. If a bar magnet is falling toward the center of a loop of a conducting wire, with the north pole oriented downward, the induced current in the loop is clockwise if viewed from the side of the loop.

e. If a horizontal metal bar oriented east-west drops straight down in a location where Earth's magnetic field is due north, the west end of the bar will be positively charged.

f. In an RL circuit, the inductor behaves like a short-circuit as the current reaches its maximum value.

Explanation / Answer

a. The magnetic flux through a closed surface surrounding only the south pole of a bar magnet is always greater than zero.    flase

b. The magnetic flux through a fixed circular loop is maximum if the magnetic field is oriented perpendicular to the plane of the loop.---- true

c. An EMF is induced in a loop of conducting wire if the magnetic flux through the loop changes with time.---true

d. If a bar magnet is falling toward the center of a loop of a conducting wire, with the north pole oriented downward, the induced current in the loop is clockwise if viewed from the side of the loop.---true

e. If a horizontal metal bar oriented east-west drops straight down in a location where Earth's magnetic field is due north, the west end of the bar will be positively charged.-----flase

f. In an RL circuit, the inductor behaves like a short-circuit as the current reaches its maximum value---true.

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