Final - Electrostatics & Electrodynamics

Question 1

Power formula:

• What does each letter stand for?

Answer 1

P = IV

P - power (Watts)

I - current (Amps)

V - potential difference (Volts)

Question 2

Formula to find total resistance in a parallel circuit:

Answer 2

Rt = 1/(1/R1+1/R2+1/R3)

Question 3

Ohms law:

• What does each letter stand for?

Answer 3

V = IR

V - Potential difference (Volts)

I - current (Amps)

R - resistance (ohms)

Question 4

Study of static electric charges

Answer 4

Electrostatics

Question 5

Study of electric currents.

Answer 5

Electrodynamics

Question 6

Study of the interaction of electric currents or fields and magnetic fields

Answer 6

Electromagnetism

Question 7

In electrostatic charge, where do the electrons come from?

Answer 7

Outermost electron shell

Question 8

Fundamental unit of charge is called the ____.

Answer 8

Coulomb

Question 9

____ charges attract; ____charges repel is the __ law of electrostatics

Answer 9

unlike, like, 1st

Question 10

Electrostatic force is ____ proportional to the product of electrostatic charges and ____ proportional to the square of the distance between them. This is called ___ law.

Answer 10

directly, inversely, Coloumb’s

Question 11

Electric charge is uniformly distributed throughout ____ objects or on the surface of ____ objects.

Answer 11

insulating, conducting

Question 12

What does a conductor do?

• example

Answer 12

Permits charges to flow freely.

• copper

Question 13

What does a insulator do?

• 2 examples

Answer 13

Impedes the flow of charges

• glass, plastic

Question 14

Electric charge of a conductor is concentrated along the ____ of the surface.

Answer 14

sharpest curvature

Question 15

behaves as conductor under some conditions and as insulator under other conditions

Answer 15

semiconductor

Question 16

exhibits no resistance below a specific temperature

Answer 16

superconductor

Question 17

Unit for current

Answer 17

Ampere (A)

Question 18

Restriction of flow is called ____.

• unit?

Answer 18

Resistance

• ohm

Question 19

How does current “flow”?

Answer 19

in opposite direction of electrons

Question 20

Electric potential difference is called ____.

Answer 20

Voltage (V)

Question 21

source of electric potential

Answer 21

battery

Question 22

restricts flow of current (electrons)

Answer 22

resistor

Question 23

temporarily stores electric charge

Answer 23

capacitor

Question 24

restricts current flow to one direction

Answer 24

diode

Question 25

increases/decreases electric potential

Answer 25

transformer

Question 26

all circuit elements are connected in a line along the same conductor

Answer 26

series circuit