Physics

Which of the following is TRUE about electric charge?

• A) It can be lost.

• B) It is created from a chemical reaction.

• C) It can be destroyed.

• D) It can be transferred from atom to atom.

Tags

NGSS.HS-PS1-1

Which of the following is the most effective conductor?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-3

Which of the following is FALSE?

• Electric field lines never intersect.

• The electric field lines produced by a positive charge are directed radially outward.

• The electric field lines produced by a negative charge are directed radially inward.

• A static charge never produces an electric field.

What is the direction of the electric field at the test point on the -x-axis, 50 cm from the charge q = +5.00 nC which is located at the origin?

• eastward

• westward

• northward

• southward

Tags

NGSS.HS-PS2-4

An electron traveling horizontally from North to South enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it has entered the field?

• downward

• upward

• to the east

• to the west

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

The electric field has a magnitude of 3.0 N/C at a distance of 30 cm from a point charge. What is the charge?

• 1.4 nC

• 30pC

• 36 mC

• 12 mC

Tags

NGSS.HS-PS2-4

What is the electric field strength at a point 50 cm from a charge q = + 5.00 nC?

• 180 N/C

• 360 N/C

• 540 N/C

• 720 N/C

Tags

NGSS.HS-PS2-4

A 1.65 nC charge with a mass of 1.5 x 10-15 kg experiences an acceleration of 6.33 x 107 m/s2 in an electric field. What is the magnitude of the electric field?

• 14.95 N/C

• 29.35 N/C

• 57.55 N/C

• 2.67 x 10-19 N/C

Tags

NGSS.HS-PS2-1

Three point charges are located on the x-axis. The first charge, q1 = +10 μC, is at x = -1.0 m. The second charge, q2 = +20 μC, is at the origin. The third charge, q3 = - 30 μC, is located at x = +2.0 m. What is the net force on q2?

• 6.3 N to the negative x-direction

• 1.50 N to the negative x- direction

• 3.15 N to the positive x- direction

• 4.80 N to the positive x- direction

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

What is the magnitude of the net electric field at (+1.0 m, 0) due to the three charges in number 9?

• 198, 256 N/C

• 297, 348 N/C

• 472,500 N/C

• 655, 490 N/C

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5