Flashcards in Conceptual Physics-Electricity Unit- Quiz 2 (Ohm's Law) Deck (20):

1

## Voltage

### energy used to move electrons (energy per charge); the "push"; can be used to run devices; symbol V

2

## Voltage is measured in...

### volts; symbol V

3

## Current

### flow of charges (electrons) through conductors; speed of charges; amount of charges going past a point in one second; symbol I

4

## Current is measured in...

### Amperes or Amps; symbol A

5

## Resistance

### opposition of a material to the flow of charges; a resistor is something that slows down current; symbol R

6

## Resistance is measured in...

###
Ohms; symbol Omega:

Ω

7

## The relationship between Current and Resistance...

### is an inverse relationship- if one goes up, the other goes down, and vice versa. (considering Voltage is constant)

8

## The relationship between Current and Voltage...

### is a direct relationship- if one goes up, so does the other, and vice versa. (considering Resistance is constant).

9

## How is a voltmeter wired into a circuit?

### in parallel

10

## How is an ammeter wired into a circuit?

### in series

11

## Ohm's Law

###
describes the relationship among voltage, current, and resistance;

Mainly V=IR or Voltage is equal to Current times Resistance

Also: I=V/R and R=V/I

12

## What are the differences between Parallel and Series circuits?

###
In series, Resistances add; In parallel, Resistances are multiplied and then divided by their sum

In Series, voltage adds; in parallel, Voltage doesn't ?

In series, there is only one path; In parallel, there are multiple paths

In series, adding devices slows the current (if the voltage is constant), and they dim consecutively; In parallel, the current remains constant in all the bulbs.

13

##
CirSym:

Conductor or Wire

### line

14

##
CirSym:

Connection

### dot on line

15

##
CirSym:

Bulb

### line going up into an "M" shape within a circle

16

##
CirSym:

One cell or battery

### line ending in a short perpendicular dash, then a gap, then a longer perpendicular dash, then the line continues. For multiple batteries, add short and long dashes with gaps then continue line.

17

##
CirSym:

Switch

###
Open: line with a connection on the end, then a tilted line only connected to the other side (with a connection)

Closed: line with two consecutive connections

18

##
CirSym:

Resistor

### 3 Zig Zags: above line, below, all the way above, all the way below, all the way above, then back down to original level of wire and continue line

19

##
CirSym:

Ammeter, Voltmeter, Generator

### A, V, or G within circle on wire

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