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Resistance and IV characteristics
Series or parallel Circuits
series or Parallel Circuits
LDR Thermistors
Potluck
100
This opposition to the movement of electron flow in a circuit is measured in what unit?
What is the Ohm?
100
If the potential difference across the circuit is 10V and the voltage of one of the bulbs in a circuit is 3V. What is the voltage of the other bulb?
What is 7V?
100
This is a circuit in which the loads are connected by branches so that there are two or more paths for electrons to flow.
What is a parallel circuit?
100
The resistance of a LDR depends on
What is the intensity of light
100
Electric current is measured using what device?
What is an ammeter?
200
The relationship among voltage, current, and resistance can be written mathematically as what equation?
What is R=V/I or V= IR or I =V/R
200
If I add more batteries or cells in series in a circuit what happens to the potential difference
What is increase?
200
Series or parallel? As more batteries are added in series, the lights get brighter. The voltage increases as batteries are added.
What is series
200
A voltmeter is connected in parallel with either a load or an energy source and is used to measure what?
What is potential difference or voltage?
300
Draw the IV graph for an ohmic resistor.
Let's See
300
An ammeter must be connected in this way in order to measure the current through a component.
What is in series with the component?
300
Series or parallel? As more batteries are added, the lights will not get brighter. The voltage does not increase, but the batteries will last longer.
What is parallel
300
Name an application of LDR
street lights, burglar alarms
300
If A load has 10A of current flowing through it and the voltage across the load is 20V, what is the resistance?
What is 2ohms?
400
Draw the circuit used to find the IV characteristic of a diode.
Lets see
400
In a parallel circut if a lightbulb goes out, what happens to the other bulbs? A) They will stay lit B)They will go out
The answer is... A) They will stay lit A parallel circut has multiple different circuts. This is how buildings are lit
400
name an application of thermistors
thermostats
400
When representing a battery the longer line is representing this type of charge.
What is the positive charge?
500
Draw the IV Characteristic graph for a diode and filament lamp.
Let's see
500
Looking at the circuit drawn on the board, calculate the missing total resistance, current and potential difference.
R total= 1Ohm V2=10V A3=1A
500
If my switch is open, it can still be possible for electrons to flow through my system.
What is a parallel circuit?
500
Draw a diagram of sensor circuit with a LDR.
Lets see
500
Only allows electrons to flow in one direction.
What is a DIODE