WorksheetsInvestigating thermistors
Total questions: 25
Worksheet time: 15mins
This is the symbol for a
Light dependent resistor
Thermistor
Diode
Fuse
Which statement about this device is true?
Its resistance is dependent on the temperature of the surroundings
Its resistance is dependent on light intensity
It only allows current to flow through it in one direction
The wire inside it gets hot and melts if too much current flows through it
Which statement about this device is true?
Its resistance is dependent on the temperature of the surroundings
Its resistance is dependent on light intensity
It only allows current to flow through it in one direction
The wire inside it gets hot and melts if too much current flows through it
This is the symbol for a
Light dependent resistor
Thermistor
Diode
Fuse
Which statement about this device is true?
Its resistance increases as temperature increases
Its resistance decreases as temperature increase
Its resistance increases as light intensity increases
Its resistance decreases as light intensity increases
What does the "therm" part of "thermistor" refer to?
Light
Sound
Heat
Electricity
What is the primary function of a thermistor in a circuit?
To store energy
To amplify signals
To measure temperature changes
To convert AC to DC
cell
battery
bulb
switch
cell
battery
bulb
switch
cell
battery
bulb
switch
cell
battery
bulb
switch
resistor
ammeter
voltmeter
fuse
motor
ammeter
voltmeter
fuse
motor
ammeter
voltmeter
fuse
motor
ammeter
voltmeter
fuse
motor
resistor
switch
fuse
motor
bulb
voltmeter
buzzer
The graph shows the change in current with potential difference for
an LED
a filament lamp
a diode
a thermistor
Where would you place a voltmeter in the circuit?
Green ?
Red ?
the formula to find current when the values of V and R are known is
I = V2R
I = V/R
I = R/V
I=VR
____________ __________ assumes that current flows out of the positive side of the battery, through the circuit, and back to the negative side of the battery.
Conventional Current
Ohms Law
Electron Flow
Kirchoff's Current Law
In a series circuit, there are multiple paths for current to flow.
True
False
Study the circuit diagram below.
Which one of the following will make each bulb in the circuit less bright?
Removing one bulb from the circuit
Removing the switch from the circuit
Adding one bulb in series to the circuit
Adding one battery in series to the circuit
