Electric Fields

Where can an electric field be found?

• below a force field

• in a gravitational field

• in the space surrounding a charged object

• outside of a magnetic field

Tags

NGSS.HS-PS3-5

Electricity is the flow of ______.

• electrons
• protons
• neutrons
• atoms

When two objects have opposite charge (+ and -), they are:

• Attracted to each other
• Repelled by each other
• Have no effect on each other

When two objects have the same charge, they are (such as + and +)

• Attracted to each other
• Repelled by each other
• Have no effect on each other

Which quantity and unit are correctly paired?

• electric field strength and N/C
• electricity and Coulombs
• electrostatic force and electrons
• electric field strength and E

Tags

NGSS.HS-PS2-4

Which one is the formula for ELECTRIC FIELD strength

• $E=\ \frac{1}{4\pi\ \epsilon_0}\ \frac{q}{r}$

• $F=\ \frac{1}{4\pi\ \epsilon_0}\ \frac{q^2}{r}$

• $E=\ \frac{1}{4\pi\ \epsilon_0}\ \frac{q}{r^2}$

• $F=\ \frac{1}{4\pi\ \epsilon_0}\ \frac{q_1q_2}{r^2}$

In the diagram below, P is a point near a negatively charged sphere. Which direction best represents the direction of the electric field at point P?

• Right
• Left
• Up 
• Down

Tags

NGSS.HS-PS2-4

If I triple the value of the charge, then its associated electric field will

• double

• triple

• halves

• divide by 3

I am carbon ion. If I stand twice as further away form a charge, then the electric field I experience will...

• halves

• double

• Not change

• divide by 4

Which one is the formula for Coulumb's Law (i.e. Electric Force).

• $E=\ \frac{1}{4\pi\ \epsilon_0}\ \frac{q}{r}$

• $F=\ \frac{1}{4\pi\ \epsilon_0}\ \frac{q^2}{r}$

• $E=\ \frac{1}{4\pi\ \epsilon_0}\ \frac{q}{r^2}$

• $F=\ \frac{1}{4\pi\ \epsilon_0}\ \frac{q_1q_2}{r^2}$