Electric Forces

1. What is an electric field?

• a. A region around a magnetic pole

• b. A region around an electric charge where its effects are felt

• c. The path of a moving electron

• d. A type of static electricity

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

2. What do electric field lines represent?

• a. The path taken by a small free-moving positive charge in an electric field

• b. The strength of magnetic fields

• c. The direction of gravitational forces

• d. The movement of electrons in a wire

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

3. Which of the following statements about electric force lines is true?

• a. They intersect each other

• b. They start from the negative charge and end at the positive charge

• c. They start from the positive charge and end at the negative charge

• d. They can penetrate charged metal objects

Tags

NGSS.MS-PS2-5

4. What is one use of an electroscope?

• a. To measure temperature

• b. To detect the electric state of an object

• c. To calculate voltage

• d. To generate electricity

Tags

NGSS.MS-PS2-3

5. What is the composition of an electroscope?

• a. Copper rod, aluminum leaves, plastic container

• b. Copper disc, copper rod, glass container, two gold leaves

• c. Silver disc, iron rod, plastic container, two silver leaves

• d. Metal disc, wooden rod, glass container, two silver leaves

6. What happens when you touch the metal disc of an electroscope with your hand?

• a. It becomes magnetized

• b. It generates electricity

• c. It discharges the electroscope

• d. It ensures the electroscope is not charged by any electric charge

7. What is the function of the two gold leaves in an electroscope?

• a. To create a magnetic field

• b. To detect changes in temperature

• c. To indicate the presence of electric charge

• d. To conduct electricity

(8) Which of the following figures shows the electric field lines between two electric charges?

• a

• b

• c

• d

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5