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Flashcards in Electric Circuits Deck (24)
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1

What are the 2 needed pieces required to have a circuit?

A power supply (the "push")
A wire

2

Anything that uses the electric energy in a circuit

Resistor

3

Law that is the cornerstone for electric circuits

Ohm's Law, V=IR

4

Ohm's Law (formula)

V=IR
V= potential difference (measured in volts)
I=current (measured in amperes)
R=resistance (measured in ohms)

5

What creates the "push" in a circuit?

a Potential Difference (voltage)

6

The quantity of charge moving past a point per second

Current (amps)

7

T/F: Current is a measurement of the distance and speed at which a charge travels

False. Current is the quantity of charge. It is a quantity rate.

8

By designation, current is the movement of what type of charge?

Positive Charge

9

Formula for Current

I=q/t
I=current measured in amps
q=quantity of charge
t=time

10

Measurement of the "electrical pump"

Voltage

11

The key to voltage is a _______________ in volts

Difference

12

What typically provides voltage?

A generator or battery

13

This inhibits the flow of current and uses voltage

Resistor

14

What is the relationship between the resistance and current?

When the voltage remains constant, resistance and current are inversely related. When one goes up, the other goes down.

15

What are the two main types of circuits?

Series Circuit
Parallel Circuit

16

A single pathway for current to flow

Series Circuit

17

A series of branches for current to flow through

Parallel Circuit

18

How do we determine the total resistance in a series circuit?

Is is the sum of all the resistors (e.g., all the bulbs added up)

19

In a series circuit, what happens when one of the resistors (a bulb, e.g.) goes out?

The whole circuit shuts down.

20

What is the relationship between Voltage and Resistance?

Big resistance, big voltage. The voltage distributed across each resistor is proportional to the resistance of that device.

21

Circuit that has multiple paths for the current to leave the battery and finally return to it

Parallel Circuit

22

In a parallel circuit, most of the current follows what path?

The path of least resistance

23

What type of circuits run in our homes?

Parallel Circuits

24

What shuts down circuits when they begin to overheat due to excessive current draw?

Fuses or Circuit Breakers