A circular loop with radius R= 20 cm carrying a current, I= 5 A is placed in a uniform magnetic field B = 0.2 T. (a) Find the magnitude of the magnetic dipole moment of the current loop. (b) Find the maximum torque acting on the loop. (c) How much work is needed to rotate this loop in this field by 90°, starting from the initial position, 0, =0° to a final position, 0r=90° ? Hint: 0 is the angle between the magnetic dipole moment and the magnetic field

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward