# Getting Started Flashcards

1
Q

How do positive and negative charges interact?

A

Like charges repel and unlike charges attract

2
Q

‘q’ stands for…

A

Charge

3
Q

The formula for current is…

A

q/sec

4
Q

Charge is defined as…

A

How many electrons move past in a second

5
Q

Current is defined as…

A

The direction in which positive charges are moving, i

6
Q

Who discovered the electron and when?

A

JJ Thompson, 1897

7
Q

Who decided the direction of current flow and when?

A

Benjamin Franklin, 1747

8
Q

What is power measured in?

A

Watts

9
Q

Voltage measures…

A

The energy transferred per unit of charge

10
Q

The formula for power is…

A

V x i

11
Q

Engineering notation is done how many digits at a time?

A

3

12
Q

10 to the 12th, 9th, 6th, and 3rd power

A

Tera, giga, mega, kilo

13
Q

10 to the negative 3rd, 6th, 9th, and 12th power

A

Milli, Micro, nano, and pico

14
Q

Frequency

A

Number of times something happens per second, measured in Hz

15
Q

Ampere

A

Measures current

16
Q

Coulomb

A

Measures charge, 1 coulomb = 1 ampere/sec

17
Q

Volt

A

Unit of electrical potential difference

18
Q

Ohm

A

Electrical unit of resistance

19
Q

What are the seven SI base units?

A

Meter, kilogram, sec, ampere, kelvin, candela, mole