7. A current (I) flows from left (L) to right (R) in a long, straight conductor as shown in the figure. An electron is projected initially to the left, as shown. The electron is acted upon by a magnetic force that is a) out of the page b) toward the left of the page c) toward the right of the page d) toward the top of the page R Le e) toward the bottom of the page

02A) a proton moves at 7.50 x 10 perpendicular to a magnetic field. The field causes the proton to travel in a circular path of radiusim What is the field strength? (a) at what speed will a proton move in a circular path of the same radius as the electron (b) What would the radius be if the proton had the same momentum?

Two long, straight wires are parallel and 5 cm apart. One carries a current of 2.0 A, the other a current of 5.0 A. If the two currents flow in opposite directions, what is the magnitude and direction of the force per unit length of one wire on the other?    a) 4.00e-5 N/m Away from each other b) 1.67e-5 N/m Towards each other c) 4.00e-5 N/m Towards each other d) 1.67e-5 N/m Away from each other

5. Two long, parallel wires are separated by a| distance of 0.400 m. The currents I, and I, have the directions shown. (a) Calculate the magnitude of the force exerted by each wire on a 1.8-m length of each other. (b) Is the force attractive or repulsive? I = 5.00 A 0.400 m 2.00 A

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1. Find the force on the moving positive charge. oUp olnto Page ORight ONot Possible oDown oleft DOut of Page B 2. A wire in a magnetic field has current flowing in it as shown. Which direction does the wire move I due to B? oUp olnto Page ORight ONot Possible oDown oleft DOut of Page B 3. A proton is at rest in a magnetic field. Which way will the proton move? oUp oDown oLeft ONot Possible ORight olnto Page DOut of Page 4. A moving proton enters a magnetic field. Which way will the proton turn? oUp olnto Page ORight ONot Possible oDown oleft OOut of Page X X X X X X X X X