Question

A long straight conductor has a constant current flowing to the right. A wire rectangle is situated above the wire, and also has a constant current flowing through it (as shown in the figure). It what direction is the net force on the wire rectangle?

 A) out of page

 B) up

 C) down

 D) force is zero

 E) left

 8) A solid cylinder of radius R = 5.0 mm caries a uniform current density of 1.50 x 106 A/m2. What is the magnitude of the magnetic field at a distance R/2 from the center axis of the cylinder?

 A) 5.89 mT

 B) 1.46 mT

 C) 7.57 mT

 D) 0.77 mT

 E) 2.36 mT

 9) Three very long, straight, parallel wires each carry currents of 4.00 A, directed out of the page as shown in the figure. The wires pass through the vertices of a right isosceles triangle of side 2.00 cm. What is the magnitude of the magnetic field at point P at the midpoint of the hypotenuse of the triangle?

 A) 1.77 x 10-5 T

 B) 4.42 x 10-6 T 

 C) 1.77 x 10-6 T

 D) 5.66 x 10-5 T

 E) 1.26 x 10-4 T

 10) A particle with charge -5.00 C initially moves at v = (1.00i + 7.00 j) m/s. If it encounters a magnetic field

 B = 10.00 Tk, find the magnetic force vector on the particle.

 A) (350 i- 50.0j) N

 B) (-350 i+ 50.0 j) N

 C) (-350 i - 50.0 j) N

 D) zero

 E) (350 i+ 50.0 j) N

Answer 1

As per HOMEWORKLIB POLICY, one question at a time needs to be posted.

I have solved two questions anyway.