For each charge distribution: -6.0 x 10-5 C 4.0 x 10-5 C 2.0 m 9₁ L. - 6.0 x 10-5 C 3.0 m A q2 2.0 m A 3.0 m 2 - 3.0 x 10-5 C 1. 2. a. Determine the net electric field at point A for the following charge distribution. b. The magnitude of the electric field due to each charge, (i.e. calculate ε₁ and ε2), at point A. c. The net electric field at point A. a. For each part in practice question 1, find the net force on a -1.2 × 10-5 C charge placed at point A. b. How would your answer change if the sign of the charge from 2a at point A was changed? 3. Explain why the concept of a field was used to describe the force of gravity between two masses. 4. Give two reasons why the concept of a field is used again to describe the force between two charged objects.

A very large plane of charge with o= 4.0x10 c/m² lies in the y-z plane. A single charge Q=3.0x 10 C lies on the +x axds at x- 2.0 m. The electric field in N/C at x=5.0 m has the value a. 104. b. 226. c. 300. d. 526. e. 752.

A mineral oil-filled capacitor is connected to a 9V battery. The capacitor is leaking oil while it remains connected to the battery. Consequently, we can expect this to happen as the capacitor continues leaking. O a. The electric field E between the plates will become stronger. O b. The electric flux density D in the capacitor will become weaker. c. The electric flux density D between the plates will become stronger. O d. The charge Q accumulated in the capacitor will remain the same.

Four equal charges (all +q) are placed on the corners of asquare with side length a.   a.)  Find an algebraic expression for the magnitude of theelectric force felt by the charge in the lower left-hand corner(circled) due to the other charges. b.) Make a sketch of the electric field lines associated with this charge distribution. Be sure to draw linesboth inside and outside the square.

a. Determine the magnitude and direction of the electric field at point P, 20 cm away from charge Q = +10?C b. Two charges are lying on the horizontal axis and are 0.2m away from each other. The charges are: ?1 =20?? ??? ?2 = −40??. Determine the magnitude and direction of the force on q1 by q2. c. An electron (q = -1.6 x 10-19 C) is initially at rest. At some time later, the electron accelerates due to a 5kV potential. Determine the change in electrical potential energy and final speed of the electron. Write down three examples of the use of electricity and magnetism in the medical field. For example, an automated external defibrillator (AED) consists of a capacitor to store electrical energy and electrode pads to deliver an electrical shock to your heart. As a result, an automated external defibrillator (AED) with CPRincreases the chances of restoring a victim’s heart rate after a sudden cardiac arrest. Use three of your ownexamples

3. a. A plate has a charge of 4 µC and a surface area of 0.3 m². 0.02 m - + 0.01 m + + Q1 = -1 μC + G₁=3F + + + + What is the electric field 0.01 m away from the plate? a. How much work is required to move a-1 μC charge from 0.01 to 0.02 m² Q = +4 μC A=0.3 m² Given the following configuration of capacitors G=2F

34. Figure P15.34 shows the electric field lines for two point charges separated by a small distance. a. Determine the ratio 91/92. b. What are the signs of q₁ and 92? Figure P15.34 92 91

A 6.6-μC charge is placed at the origin and a second charge is placed on the x-axis at x = 0.1 m. If the resulting force on the second charge is 5.7 N in the positive x-direction, what is the value of its charge? a. 1.0 μC b. 1.0 nC c. –1.0 μC d. –1.0 nC e. 0 μC

An electron has an initial velocity of 4.9 × 106 m/s in a uniform 2.25 × 105 N/C electric field. The field accelerates the electron in the direction opposite to its initial velocity. a.  What is the direction of the electric field?  b.How far does the electron travel before coming to rest in m?  c.   How long does it take the electron to come to rest in s?  d. What is the magnitude of the electron's velocity (in m/s) when it returns to its starting point in the opposite direction of its initial velocity?

Can someone help with this question.