Suppose you plan to make an electromagnet by passing electric current through this solenoid so that (conventional) current enters the right end, exits at the left. Therefore, the right end will indicate a/ an 1.unmagnetized as the current is just starting to flow 2. south pole 3.north pole 4. not determined because this current has nothing to do with magnetism

1.  A DC power line for a light-rail system carries 950 A at an angle of 33° to the Earth’s 5.00 × 10-5 T magnetic field. What is the magnitude of the force (in N) on a 125 m section of this line?  2. Consider a 150 turn square loop of wire 15.5 cm on a side that carries a 56 A current in a 1.6 T field. What is the maximum torque on the loop of wire in N⋅m?  What is the magnitude of the torque in N⋅m when the angle between the field and the normal to the plane of the loop θ is 14°?  3.  Consider two two long, straight, parallel, current-carrying wires, separated by a distance d = 4.5 cm, as shown in the figure. The left wire is directed out of the page with current I1, and the right wire is directed into the page with current I2. The point P is a distance d from both wires, so the wires and the point form an equilateral triangle. If both wires are carrying a current of 3.5 A, what is the magnitude of the magnetic field, in teslas, at point P?  If the current from the left wire is 3.5 A…

Physics 2. The right-hand rule allows one to find a property of the interaction of a magnetic field with a charged particle. The right-hand rule applied to moving charges:   a.  results in positive charges moving clockwise.   b.  results in negative charges moving clockwise.   c.  can be used for positive charges only.   d.  gives the direction of the force on a charge moving in a magnetic field.

What is the direction of the magnetic force on a negative charge that moves as shown in the figure? B Select one: O a. In O b. there is no magnetic force O. Out O d. Left When the light is passing from rarer to a denser medium, which is the correct statement? O a. speed becomes zero O b. speed of light increases speed of light remains constant O d. speed of light decreases

3. An electron moving at 3.60×103 m/s in a 1.21–T magnetic field experiences a magnetic force of 2.68×10-16 N. What angle does the velocity of the electron make with the magnetic field? There are two answers. list the smaller angle first, then next the larger angle)   This is not and will not be graded

18. Two very long conductors (both oriented in the same plane) are shown in the sketch below. The same magnitude of conventional current in each is represented by the red arrows. The black dot is at a position (in the same plane) equidistant between the conductors. Determine the direction of the magnetic field at the position of the black dot. A. There is no magnetic field at this position. B. The magnetic field is oriented out of the page. C. The magnetic field is oriented into the page. D. The magnetic field is oriented to the left. E. The magnetic field is oriented to the right.