Static Electricity and Electric Fields Flashcards Preview

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Flashcards in Static Electricity and Electric Fields Deck (17)
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1

A charged atom is caused by what?

The addition of electron(s) or the removal of electron(s).

2

For every _______________ charged object, there must be a _____________ charged object.

positively; negatively

3

The only way in which an object can acquire a net charge

Transfer from one object to another

4

An object or substance that holds the negative charge more is said to have stronger

Electronegativity

5

An object that is charged through friction or contact has what type of charge?

Negative

6

Positive and negative charges separate within an object due to contact/proximity of a charged object and the rules of attraction

Polarization

7

T/F: Charges within a polarized object remain separated after the charged object is moved away

False. Polarization is a temporary situation.

8

How does a neutral object (i.e., paper) react to a charged object?

A neutral object will always be attracted to a charged object, whether negative or positive. Charges within a neutral object polarize to cause the attraction.

9

Multiple-step process by which zones of positive and negative charge are created in an object, then electron build-up is routed out of the object, leaving a positively charged object

Induction

10

Formula for Coulumb's Law

F=kqq/r squared
k= constant, 9 * 10 to the 9th
qq= charge of each object
r squared=distance between two objects squared

11

What would happen to the force of attraction if two objects are moved twice as far away?
What would happen to the force of attraction if two objects are moved three times as far away?

The force would become 4 times less.
The force would become 9 times less.

12

What would happen to the force of attraction between two objects if the charge of the particle was doubled?

The force would be doubled.

13

Formula for Electric Field

E=F/q
E= electric field - measured in Newton/Coulumb
F=force on the object
q=test charge

14

What direction does an electric field have?

The same direction as the electric force on the charge.

15

When visualizing an electric field, the number of lines represents what?

The magnitude of the charge.

16

Electric Fields push positive charges _______________ and negative charges ___________________.

positive charges in the direction of the field;
negative charges in the direction opposite the field

17

What tells the electrons which way/where to go?

The electric field.