Three locations, 1, 2, and 3, are labeled in the electric field diagram on the r

Question

Three locations, 1, 2, and 3, are labeled in the electric field diagram on the right. At which of these locations is the strength of the field the greatest? An electric field has a value of 350 N/C at a particular point in space, directed along the x axis. What is the force this field exerts at this point on a particle of charge (a) 5.00mu C? (b)-8.25 mC (c)-525 C d 5.34 times 10^-15 C? Make sure to check the sign of your answer Two particles are situated on the x axis. The particle q_1, with 34 excess electrons, is situated at the point x = 100 mu m. The other particle q_2, with 17 excess electrons, is located at the origin. Give the x value of a point between the particles where the strength of the field they generate is zero. When a test charge of6.0 times10^-80 C is placed at the origin, it experiences a free of 2 8e^-3 N in negative x direction from an external electric field. (a) What is the magnitude of the electric field at the origin? (b) If this field is due to a point charge at x = 4.0m on the x axis, what is the amount of this charge? A parallel-plate capacitor has a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential what is the electric field between the plates? Two parallel plates, separated by 0.20 m, are connected to a 12-V battery. An electron released from rest at a location 0.10 m from the negative plate. When the electron arrives at a distance 0.050 m from the positive plate, what is the speed of the electron? The electric field shown on the right increases to the right. increases down decreases to the right. Decreases down. is uniform. Electric field lines near positive point charges circle clockwise. Circle counter-clockwise. radiate inward. radiate outward. An electron and a proton are separated by a distance of 1.0 m. What happens to force on the proton if the electron is moved 0.50 m closer to the proton? It increases to 4 times its original value. It increases to 2 times its original value It decreases to one-half its original value. It decreases to one-fourth its original value. An atomic nucleus has a charge of +40e. An electron is 10-9 from the nucleus. What is the force on the electron?

Explanation / Answer

1.solution

The following rules apply to electric field lines:

Lines begin and end only at charges (beginning at + charges, ending at - charges) or at Infinity.

Lines are closer together where the field is stronger.

Larger charges have more field lines beginning or ending on them.

Electric Field lines never cross (since E must point in a definite direction unless it is zero).

At any location, the direction of the electric field is tangent to the electric field line that passes through that location

so at location 2 the strength of the field is stronger becuase lines are closer together

2.solution

Use F=qE

E = 350 N/C
put q in culamb(C)
1C=1x10^-6C
1mC=1x10^-3C

a) q = 5 C = 5*10-6 C

F = 5*10-6*350 = 1.75*10-3 N

b) q = -8.25 mC = -8.25*10-3 C

F =  -8.25*10-3*350 = 2.887N

c) q = - 525 C

F = -525*350 = -183750N

d) q = 5.34*10-15C

F = 5.34*10-15 * 350 = 1.869*10-12 N

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