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Flashcards in Current Electricity Deck (21):
1

__________ are literal representations of circuits

Pictorial Circuit Diagrams

2

_________ are the standard format to represent circuits

Schematic Circuit Diagram

3

Which way do electrons flow?

Negative - positive

4

Which way does current flow?

Positive - Negative

5

What is the electric potential difference?

Electrons accumulate at one terminal, making it negative and the other positive. The electrons are energized to go to the positive terminal; difference between anode and cathode

6

Is the anode positive or negative?

Positive

7

Is that cathode positive or negative?

Negative

8

What is resistance?

Anything you add to a circuit that hinders the motion of electrons (motor, light bulb)

9

Resistance depends on which 4 factors?

Type of material, length, diameter, temperature

10

What is the formula for resistance?

R = V/I

11

What is the formula for density?

D = m/V

12

What is the formula for current?

I = Q/t

13

What is the formula for potential different / voltage?

V = E/Q

14

1 electron is _________ coulombs.

1 electron = 1.602 x 10^-19 coulombs

15

1 coulomb is _________ electrons

1 coulomb = 6.25 x 10^18 electrons

16

What are the formulas for calculating total resistance?

Series = R1 + R2 + R3...
1/ Parallel = 1/R1 + 1/R2 + 1/R3...

17

What is the symbol for charge?

Q

18

What is the symbol for current?

I

19

What is the unit for energy?

Joules

20

What is the unit for charge?

Coulombs

21

What is the unit for current?

Ampere (c/s)