Electricity/Magnetism/Modern Physics

A piece of fur is rubbed against a plastic rod. The resulting charge on the fur is 12 µC. What will be the charge on the rod?

• 6 µC

• 12 µC

• -6 µC

• -12 µC

Consider the electric force between a pair of charged particles a certain distance apart. By Coulomb's Law: If the charge on one of the particles is halved, the force is

• Doubled

• Halved

• Quadrupled

• Remains the same

In the picture shown, a positive test charge is placed at Point P in the electric field. Which of the following is the best description of the charge as it is released?

• 
• 
• 

If distance between two charges is reduced to one-third, what happens to the force of attraction between those charges?

• Increases by a factor of 9

• Decreases by a factor of 9

• decreases by a factor of 3

• increases by a factor of 3

• increases by a factor of 6

The graphic illustrates the path of a positively charged particle as it is fired between two plates of unknown charge. Which of the following is the most likely orientation of the plates?

• Plate A: Negative

  Plate B: Negative

• Plate A: Negative

  Plate B: Positive

• Plate A: Positive

  Plate B: Negative

• Plate A: Positive

  Plate B: neutral

What kind of circuit is this?

• Series
• Consecutive
• Parallel
• Training

A class prepared some electrical circuits using battery, connecting wires, and three light bulbs.  Which of these circuits can make the three bulbs light?

• A
• B
• C
• D

Tags

NGSS.HS-PS3-3

Bits of paper are attracted to the surface of this balloon.  What attracts the paper pieces to the balloon?

• Friction
• Static Electricity
• Magnetism
• Potential Energy

Tags

NGSS.MS-PS2-3

The magnetic fields of any magnet are greatest --

• around the poles
• around the middle
• around only the south pole
• around only the north pole

This image represents what type of circuit?

• open
• closed
• series
• parallel