PART I.

Solve the following problems. Box your final answer. Use GRESA method. 1. A 25.0 m metal rod moves at a speed of 5 m/s perpendicular to a magnetic field of intensity 1.4 T. Find the resulting potential difference at the ends of the rods.

2. A square loop with 5 cm sides is perpendicular to a uniform field 150 mT in intensity. If a third of this flux remains every 0.010 s, what is the average EMF induced?

3. A circular loop with a diameter of 15.0 cm lies on a horizontal plane as viewed from above. Through it is a 3.8 A of current moving clockwise. What is the magnitude and direction of the magnetic field at the center of the loop?

4. An electron is moving to the -x at 2.00 x 105 m/s through a uniform magnetic field of 1.4 x 10?4 T along the +y. What is the magnitude and direction of the force if the velocity of the electron and the magnetic field are perpendicular to one another?

5. The hot and neutral wires supplying DC power to a light-rail commuter train carry 1000 A and are separated by 100 cm. What is the magnitude and direction of the force between 50 m of these wires?

6. A helix of six circular loops of radius 7 cm carries current of 2.5 A. The flow is seen as counter-clockwise when viewed along a line perpendicular to the loops Formed. What is the magnitude and direction of magnetic field that this solenoid is creating?

PART II.

A. Draw the direction of force and the magnetic field for each item.

Progress Check 1: Try it out! Draw the direction of force of each item. Assume that the magnetic field is pointing outward the screen. 1 . 2. 3.Progress Check 2: Draw it! Draw the magnetic lines of force for the following magnet configurations. 1 . S N S N 2. N S S N