A square loop of side a, mass m and resistance R is placed coplanar with a long fixed wire carrying current I as shown. The current in the conductor is suddenly switched off. Neglecting gravity, the velocity acquired by the loop will be:

The loop of wire is being moved to the right at constant velocity. A constant current I flows in the long straight wire in the direction shown. The current induced in the loop isSelect one:a.clockwise and proportional to I2b.counterclockwise and proportional to I2.c.counterclockwise and proportional to I.d.zero.e.clockwise and proportional to I.

Q.32 A rectangular loop of wire of size 4cm x 10cm carries a steady current of 2A. A straight long wirecarrying 5A current is kept near the loop as shown. If the loop and the wire are coplanar, find-(i) the torque acting on the loop and(ii) the magnitude and direction of the force on the loop due to the current carrying wire

The rectangular loop of wire is being moved to the right at constant velocity. A constant current I flows in the long wire in the direction shown. What are the directions of the magnetic forces on the left-hand (L) and right-hand (R) sides of the loop?

所選文字: As shown in the figure, a rectangular current loop is carrying current I1 = 3.0 A, in the direction shown (Figure), and is located near a long wire carrying a current Iw. The long wire is parallel to the sides of the rectangle. The rectangle loop has length 0.80 m and its sides are 0.10 m and 0.70 m from the wire, as shown. We measure that the net force on the rectangular loop is 4.9 x 10' N and is directed towards the wire. (Ho = 4元x 107T.m/A) (a) What is the magnitude of the current lw? (b) In which direction does Iw flow: from top to bottom or from bottom to top in the sketch? 解釋

A single-turn square loop of wire, 2.00 cm on each edge, carries a clockwise current of 0.250 A. The loop is inside a solenoid, with the plane of the loop perpendicular to the magnetic field of the solenoid. The solenoid has 30.0 turns/cm and carries a clockwise current of 15.0 A.(a) Find the force on each side of the loop.magnitude µNdirection (b) Find the magnitude of the torque acting on the loop. N · m