Circuts

Question 1

_____ ___ - Formula used to calculate the relationship between voltage (V), current (I) and resistance (R) in an electrical circuit

Answer 1

Ohms law

Question 2

_____ (aka potential difference) - Measured in volts (V). The potential difference that pushes electrons through a circuit. If there’s no voltage there is no current (Ex: outlet or battery)

Answer 2

Voltage

Question 3

____ - Measured in amps (A). The rate at which charges flow through a complete circuit)

Answer 3

Current

Question 4

_____ - Measured in ohms (omega symbol). the opposition to an electric currents flow (ex: a lightbulb)

Answer 4

Resistance

Question 5

Voltage have a ___ relationship with current and resistance

Answer 5

Direct relationship

Question 6

Current and resistance have an ___ relationship

Answer 6

Inverse relationship

Question 7

____ measured in watts (W), depends on V, I, and R

Answer 7

Power

Question 8

___ = charge (q) per time (t). 1 amp = 1 C/s

Answer 8

Current

Question 9

—| I— (symbol for what?)

Answer 9

Voltage source (V)

Question 10

——— (symbol for what?

Answer 10

Wire (A)

Question 11

——(X)—- or —-(squiggle)—- (Symbol for what?)

Answer 11

Lightbulb (ohm symbol)

Question 12

—-/\/\/— (Symbol for what?)

Answer 12

Resistor (ohm symbol)

Question 13

—-⚫️/ ⚫️— (Symbol for what?)

Answer 13

Switch

Question 14

—-(V)—- (Symbol for what?)

Answer 14

Voltmeter (V)

Question 15

—(A)— (Symbol for what?)

Answer 15

Ammeter (A)

Question 16

Wires have (high/low) resistance

Answer 16

Low resistance

Question 17

Resistors (use/don’t use) the voltage that travels through the circuit

Answer 17

Use the voltage

Question 18

Switches open (current can/cant flow) the circuit

Answer 18

Current Can’t flow

Question 19

Switched close (current can/cant flow) the circuit

Answer 19

Can flow

Question 20

+ (high/low potential)

Answer 20

High potential

Question 21

Electricity chooses the path of (most/least) resistance. Since wires have no resistance electricity will go through a wire instead of a device or circuit (this causes a short circuit)

Answer 21

Least resistance

Question 22

___-___ - When a wire by-passes a device in a circuit

Answer 22

Short-circuit

Question 23

Vemf (___ ___) = Voltage of your battery. (Each resistor in a series circuit will use some of this voltage, so the amount of voltage they use should add up to the total, your battery’s voltage)

Answer 23

Total Voltage

Question 24

RT (___ ____) - In a series circuit you add together the resistance of each resistor to find the total

Answer 24

total resistance

Question 25

IT (___ ____) - In a series circuit the same amount of current flows through each resistor. (Use ohms law to calculate total current from total voltage and total resistance)

Answer 25

Total current

Question 26

When voltage increases current ____

Answer 26

Increases

Question 27

When resistance increases the current ____

Answer 27

Decreases

Question 28

When voltage increases resistance _____

Answer 28

Increases

Question 29

In a SERIES CIRCUIT, the current is always ____ (constant/different)

Answer 29

Constant

Question 30

As we add more resistors in a SERIES, the current ___ (dec/inc). This is because adding more resistors in a SERIES means there is ____ (more/less) resistance to the flow of charge

Answer 30

Decreases More

Question 31

The sum of the voltage of all the resistors is (less than/equal to/greater than) the voltage of the battery.

Answer 31

Equal to

Question 32

In a PARALLEL CIRCUIT the sum of the currents of all the resistors is ___ (less/equal/greater than) the current from the battery.

Answer 32

Equal to

Question 33

As we add more resistors in a PARALLEL CIRCUIT, the current in the circuit ____ (inc/dec/no change). This is because adding more resistors in a PARALLEL means there is (more/less) resistance to the flow of charge.

Answer 33

Increases Less

Question 34

For resistors in PARALLEL, the voltage across each resistor is always ____ (the same/different)

Answer 34

The same

Question 35

Voltmeters go (parallel/through) the circuit because things in parallel with each other have the same voltage

Answer 35

Parallel

Question 36

Ammeters go (parallel/through) the circuit because things in series with each other have the same current

Answer 36

Through

Question 37

Fuses ____ (or break) when too much current passes through it

Answer 37

Melt

Question 38

Circuit breakers protects against too much current like fuses but they can be ____

Answer 38

Reset

Question 39

Conventional current flows from the _____ potential to the ____ potential

Answer 39

High to low (positive | to negative I side of battery)

Question 40

Electron current flows from ____ potential to ___ potential

Answer 40

Low to high (I to | on the battery)

Question 41

Solve complex circuits by starting with the _____ circuits

Answer 41

Parallel circuits

Question 42

Converting power to kW

Answer 42

Divide power by 1000

Question 43

Energy =

Answer 43

Power x time

Question 44

Cost =

Answer 44

Energy x rate

Question 45

In a SERIES circuit, what happens to the brightness of the bulbs as more bulbs are added to the circuit?

Answer 45

The bulbs dim as more are added

Question 46

In a SERIES circuit, what happens to the rest of the bulbs when one bulb goes out?

Answer 46

They all will go out if they share the same path/current

Question 47

In a PARALLEL circuit, what happens to the brightness of the bulbs as more bulbs are added to the circuit?

Answer 47

The brightness of the bulbs will stay the same

Question 48

In a PARALLEL circuit, what happens to the other bulbs when one bulb goes out?

Answer 48

If one goes out the others will stay the same because there are multiple pathways for the current to flow

Question 49

(Thin/thick) wires provide more resistance

Answer 49

Thin