Question

2.1)

What is the speed of an electron that accelerates from rest starting close to the negative plate of a capacitor just before it hits the positive plate? The electric field between the plates is 300 V/m and the distance between the plates is 0.050 m.

	3.25 x 106 m/s
	2.30 x 106 m/s
	5.28 x 1012 m/s
	2.64 x 1012 m/s

2.2)

A charge of +2.00 nC is on the Y axis at the point (0, 2.00) m. A charge of -3.00 nC is on the X axis at the point (3.00, 0) m. Find the direction of the electric field at the Origin.

	1240
	2360
	– 56.30
	56.30

2.3)

The electric field at a point A has the components E_x = 3.00 V/m   and E_y = +2.50 V/m. Find the direction of the force acting on a charge -14.0 nC placed at the point A. Express your answer as an angle measured counterclockwise from the positive X axis.

	39.80
	– 39.80
	219.80
	140.20

2.4)

A charge of 3.00 nC is on the Y axis at the point (0, 2.00) m. A charge of -2.00 nC is on the X axis at the point (-3.00, 0) m. Find the magnitude of the electric field at the Origin.

	14.8 V/m
	7.03 V/m
	2.00 V/m
	6.74 V/m

Answer 1