1. 1- A long straight wire carries current I = 10 A pointing into the page at the origin. In addition to the magnetic field due to the wire, there is a uniform external magnetic field B0 = 2 μT directed along the positive y-axis as shown in the figure. Wht is The total magnetic filed (in μT) at point P 2- A uniform magnetic field B is directed into the page. An electron enters this field with initial velocity v to the right. Which of the following best describes the path of the electron while it is still within the magnetic field? A)It moves in a straight line. B) It bends upward in a parabolic path. C) It bends downward in a parabolic path. D) It bends upward in a circular path. E) It bends downward in a circular path. 3- A long straight wire carrying a 3 A current enters a room through a window 1.5 m high and 1 m wide. The path integral B ∫ ds ⋅

2. 1-Two long, straight, parallel wires are 0.5m apart are placed as shown in the figure. The left wire carries a current of I 1 =8A out of the plane of the paper and the right wire carries a current of I 2 =6A into the plane of the paper. (a)What is the net magnetic field at point P 1 { Give its magnitude and direction} 2-An ion with a charge of + 3.2 × 10 –19 C is in a region where a uniform electric field of magnitude 5 × 10 4 V/m is perpendicular to a uniform magnetic field of magnitude 0.8 T. If its acceleration is zero what its speed. 3-An electron (charge = –1.6 × 10 –19 C) is moving at 3 × 10 5 m/s in the positive x direction. A magnetic field of 0.8 T is in the positive z direction. The magnetic force on the electron is Y

3. 1-Two long, straight, parallel wires are 0.5m apart are placed as shown in the figure. The left wire carries a current of I 1 =8A out of the plane of the paper and the right wire carries a current of I 2 =6A into the plane of the paper. (a)What is the net magnetic field at point P 1 { Give its magnitude and direction}

4. 2-An ion with a charge of + 3.2 × 10 –19 C is in a region where a uniform electric field of magnitude 5 × 10 4 V/m is perpendicular to a uniform magnetic field of magnitude 0.8 T. If its acceleration is zero what its speed. a =0 v is Constance in magnitude and direction

5. 3-An electron (charge = –1.6 × 10 –19 C) is moving at 3 × 10 5 m/s in the positive x direction. A magnetic field of 0.8 T is in the positive z direction. The magnetic force on the electron is

6. 3- A long straight wire carrying a 3 A current enters a room through a window 1.5 m high and 1 m wide. The path integral B ∫ ds ⋅ 1- A long straight wire carries current I = 10 A pointing into the page at the origin. In addition to the magnetic field due to the wire, there is a uniform external magnetic field B 0 = 2 μT directed along the positive y- axis as shown in the figure. Wht is The total magnetic filed (in μT) at point P

7. 2- A uniform magnetic field B is directed into the page. An electron enters this field with initial velocity v to the right. Which of the following best describes the path of the electron while it is still within the magnetic field? A)It moves in a straight line. B) It bends upward in a parabolic path. C) It bends downward in a parabolic path. D) It bends upward in a circular path. E) It bends downward in a circular path.

8. 1-A rectangular loop of wire has dimensions a × b and includes a resistor R. This loop is pulled with speed v from a region of no magnetic field into a uniform magnetic field B pointing through the loop, as shown above. What is the magnitude and direction of the current through the resistor? A) Bav/R, left-to-right B )Bbv/R, left-to-right C) Bav/R, right-to-left D) Bbv/R, right-to-left E) Bba/R, right-to-left