Electrostatics, Magnetism, Circuits

Question 1

Charge of electron

Answer 1

1.6x10^(-19)C

Question 2

Does a proton or electron have greater mass?

Answer 2

Proton

Question 3

Does charge buildup occur in dry or humid environments?

Answer 3

Dry

Question 4

Does a conductor or insulator distribute charge across their surface?

Answer 4

Conductor

Question 5

What is coulomb’s law used to quantify?

Answer 5

Magnitude between two charges

Question 6

Equation for coulomb’s law

Answer 6

Fe=kqq/(r^2)

Question 7

Equation for an electric field (two parts)

Answer 7

E=(Fe/q)=(kQ/(r^2))
q is test charge
Q is source charge

Question 8

Equation for electric potential energy

Answer 8

U=(kQq)/r

Question 9

Is decreasing electric potential energy more or less stable?

Answer 9

More

Question 10

Electric potential definition

Answer 10

Ratio of a charge’s electric potential energy to the magnitude of charge

Question 11

Electric potential equation

Answer 11

V=U/q

Question 12

How is work related to voltage and charge?

Answer 12

W=q(deltaV)

Question 13

What is current?

Answer 13

Movement of charges

Question 14

What is conductance?

Answer 14

Reciprocal of resistance

Question 15

Equation for current

Answer 15

I=Q/(deltaT)

Amount of charge / change in time

Question 16

What is the SI unit for current and what does it equal?

Answer 16

Ampere

Coulomb per second

Question 17

How is the direction of current flow related to direction of electron flow?

Answer 17

Opposite

Question 18

What is voltage?

Answer 18

Potential difference

Question 19

What are the units of voltage and what does it equal?

Answer 19

Volt

Joule per Coulomb

Question 20

What is the electromotive force?

Answer 20

Potential difference between two terminals, charge is not moving

Question 21

Circuit junction rule

Answer 21

At any point or junction, sum of current going in is sum of current leaving

Question 22

Circuit loop rule

Answer 22

Around any closed circuit loop, the sum of voltage sources will be equal to the number of voltage drops

Question 23

What is resistance?

Answer 23

Opposition to the movement and flow of charge

Question 24

Does resistance increase or decrease with temperature?

Answer 24

Increase

Question 25

Equation for resistance?

Answer 25

R=(pL)/A

Question 26

Ohm’s Law

Answer 26

V=IR

Question 27

Power equations in an electrical circuit? (3 parts)

Answer 27

P=IV=(I^2)R=(V^2)/R

Question 28

How are resistors in parallel related?

Answer 28

Additive

Question 29

How is voltage related across resistors in series?

Answer 29

Voltage is the same for all pathways

Question 30

How is overall resistance related across resistors in series?

Answer 30

1/R=(1/R1)+(1/R2)…

Question 31

What are capacitors?

Answer 31

Elements that can hold charge at a particular voltage

Question 32

Equation for capacitance?

Answer 32

Charge/voltage

Question 33

Equation for potential energy stored in a capacitor

Answer 33

U=0.5C(V^2)

Question 34

How are capacitors in parallel and series related to resistors?

Answer 34

Equations are opposite

Question 35

What is used to measure current?

Answer 35

Ammeter

Question 36

What is used to measure voltage?

Answer 36

Voltmeter

Question 37

What is used to measure resistance?

Answer 37

Ohmmeter