CVT 102 Lab Circuits

Question 0

Why is a voltage drop called a “voltage drop”?

Answer 0

More resistance, less current

Question 1

What happens to current in a circuit when you add more resistance in series?

Answer 1

You get less current when you add more resistance

Question 2

What is the relationship between the resistance and the voltage drop?

Answer 2

the resister is using up voltage and creating heat

Question 3

What is the relationship between the resistance and the current?

Answer 3

More resistance means less current

Question 4

Current divider equation

Answer 4

Ix=Rp
—- * It
Rx

This is for I2, I3, etc.

Question 5

Voltage divider equation

For Voltage in Parallel (Vp)

and

Individual voltage (V1)

Answer 5

For voltage in parallel: Vp = Rp
—- * Vt
Rt

For individual voltage: Vx = Rx
—- * Vt
Rt

Question 6

How to solve for It?

Answer 6

It = E(V)
—–
Rt

Question 7

How to solve for Resistance?

How to solve for Voltage?

How to solve for Current?

(Use the pyramid)

Answer 7

E(V)
———–
I | R

Question 8

How do you get total resistance in a series circuit?

Answer 8

Add the resistance up.

Question 9

How do you get the total resistance in a parallel circuit?

Answer 9

The 1 over 1 over equation

Question 10

How do you measure voltage in a parallel circuit?

Answer 10

You stratal each parallel resisters while the circuit is complete.

Question 11

define a series circuit?

Answer 11

A single pathway

Question 12

define a parallel circuit

Answer 12

multiple pathways

Question 13

Describe the relationship of each voltage drop to each resistance value

Answer 13

more resistance bigger voltage drop

Question 14

Note that Vx (the individual voltage drop) is a fraction of the total voltage (Vt), that fraction representing the individual resistance (Rx) divided by the total resistance (Rt).

Answer 14

Its not about the absolute value of the resistances, but the proportion relative to the total; if you had 10, 20, and 30 ohms, the voltage drops would be the same as with 1,000, 2,000, and 3,000 ohms

Question 15

What is the definition of Current?

Units of measure table

Answer 15

A flow of electrical charge

Current = I

Units of measure: Symbol: Value:
Ampere or amp A (x1)
milliamp mA 1/1000th of an amp
microamp μA 1/1,000,000th of
an amp

Question 16

What is the definition of Voltage?

Units of measure table

Answer 16

A potential difference in electrical charge

Voltage = V or E

Units of measure: Symbol: Value:
volt V or E (x1)
millivolts mV 1/1000th of a volt
microvolt μV 1/1,000,000th of
a volt

Question 17

What is the definition of resistance?

Units of measure table

Answer 17

The opposition to flow of an electrical current

Resistance = R

Units of measure: Symbol: Value:
Ohm Ω (x1)
kilohm kΩ ohm x 1,000
megohm MΩ ohm x 1,000,000

Question 18

Power equation

Answer 18

P = V x I OR P = E x I

P=Power in watts (w)

Question 19

What are the symbol and units for power?

Answer 19

P=Power in watts (w)

Question 20

Microshock

Answer 20

current is less than 1 milliamp (mA)

Question 21

Macroshock

Answer 21

current greater than 1 milliamp (mA)

Question 22

What is the importance of a ground plug?

Answer 22

it can take more electricity than the body

Question 23

The cause of death from electrical shock is usually from what cardiac arrythmia?

Answer 23

v-fib

Question 24

A green wire is

Answer 24

Ground

Question 25

A white wire is

Answer 25

Neutral

Question 26

A black wire is

Answer 26

live (hot wire)

Question 27

what type of plug is hospital grade?

Answer 27

Three prong plug

Question 28

Unwanted or unnecessary physiological response to current is?

Answer 28

electrical shock

Question 29

What department checks electrical in the hospital setting?

Answer 29

Biomedical department

Question 30

A log rythmic scale has to be in powers of what on the y axis?

Answer 30

powers of 10. It can never start from 0. example: 1, 10, 100, 1000, 10000

Question 31

How many voltage drops in this Circuit? | There are two parallel resistors and four series resistors.

Answer 31

There are a total of 6 voltage drops Each block of parallel resistors is 1 voltage drop and each series resistor is 1 voltage drop.

Question 32

Ohms law: if resistance decreases, what happens to current

Answer 32

Current increases

Question 33

What is a major node?

Answer 33

A branch between the circuits

Question 34

Give the voltage divider equation

Answer 34

Rp Rx ---- x Vt OR ---- x Vt Rt Rt

Question 35

What is the voltage drop across a parallel circuit?

Answer 35

There is 1 voltage drop

Question 36

Therefore, if you have a parallel circuit with a source voltage of 20V and one parallel circuit with R1, R2, and R3, what is the voltage drop across?

Answer 36

R1: 20V R2: 20V R3: 20V

Question 37

What materials make good conductors?

Answer 37

copper, silver, aluminum

Question 38

What materials make bad conductors?

Answer 38

Lead, gold, brass

Question 39

Define static electricity

Answer 39

Electrons are not moving and sitting on a surface. when you walk across a rug and you get shocked.

Question 40

Cathode and Anode

Answer 40

Cathode is Positive of your AA battery Anode is negative Positive to positive repels negative to negative repels positive to negative attracts

Question 41

Electricity

Answer 41

- physical phenomenon - Attraction of particles with opposite charges - Repulsion of particles with some charge Electrons (-) Protons (+) Neutrons (No charge)

Question 42

Ohms Law V(E) ---------- I / R

Answer 42

How to get resistance, voltage in volts and current in A (Amps) OHMS LAW!!!

Question 43

How to read resistors to see how much resistance?

Answer 43

First color is the first number EX: 1 Second color is the second number EX: 0 Third color is the multiplier EX: x100 Example: 10 x100 =1000 ohm resistor

Question 44

How to calculate Resistance in Series Circuits

Answer 44

add them up

Question 45

How to calculate Resistance in a Parallel Circuit

Answer 45

1 over 1 over equation

Question 46

What is the equation to measure total Current or I(Ampere) in Series Circuit?

Answer 46

V I = ---- R Voltage divided by resistance

Question 47

What is the equation to measure indivudual current in a parallel curcuit?

Answer 47

Rp Ix = ----- x It Rx

Question 48

What is the equation to measure voltage in parallel?

Answer 48

Rp ---- x Vt Rt

Question 49

what is the equation to measure voltage in series?

Answer 49

Rx ---- x Vt Rt

Question 50

How do you get Rt in a circuit?

Answer 50

If the circuit is series, just add the resistors up. If the circuit is parallel, do the 1 over 1 over equation, then add them up. If the circuit is a series and parallel circuit, add the the Rp for each and the resistors in series.

Question 51

How do you convert from A to a mA to a μA?

Answer 51

move three places from the A to the Left for a mA | move six places from the A to the Left for a μA

Question 52

How do you convert from μA to mA?

Answer 52

Move three places to the Right

Question 53

How do you convert from 1Ω to KΩ then to a 1MΩ ?

Answer 53

move three places from 1Ω to the Left for a kΩ | move six places from 1Ω to the Left for a MΩ

Question 54

How do you convert from 1V to a mV to a μV?

Answer 54

move three places from the V to the Left for a mV | move six places from the V to the Left for a μV