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How would you set up a circuit to measure the IV characteristic of a component?
Investigation of the current-voltage (I-V) characteristics of a component
- Connect the circuit as shown in the diagram above.
- Adjust the variable resistor until the voltmeter reads 1 V.
- Record the readings on the ammeter and on the voltmeter .
- Adjust the variable resistor to increase the voltmeter reading to 2 V.
How would you describe a potential divider?
A potential divider is a simple circuit that uses resisters(or thermistors / LDR’s) to supply a variable potential difference. They can be used as audio volume controls, to control the temperature in a freezer or monitor changes in light in a room.
What are the IV characteristics of a resistor?
A resistor R satisfies Ohm’s law I=V/R, so its I-V characteristic goes through the origin and has slope 1/R. A voltage source V_s maintains a fixed voltage drop and can allow any current, so its I-V characteristic is a vertical line at V=V_s.
What is VI resistor characteristics?
Linear VI Characteristics A linear VI curve has a constant slope and hence a constant resistance. Carbon resistors and metals obey Ohm’s law and have constant resistance. This means that the V-I curve is a straight line passing through the origin.
What can a potential divider be used for?
A potential divider is a simple circuit that uses resistors to supply a variable ‘potential difference’ (i.e. voltage).This can be used for many applications, including control of temperature in a fridge or as audio volume controls. Understanding how the resistors in the circuit allow this is important for designing many electronic circuits.
What does a voltage divider circuit look like?
A voltage divider circuit will normally look like this in a circuit with a series of 2 resistors. R1 = Resistor closest to input voltage (Vin) R2 = Resistor closest to ground V in = Input Voltage
What can a grove voltage divider be used for?
The Grove – Voltage Divider provides an interface for measuring external voltage which eliminates the need to connect a resistance to input interface With a dial switch, you can easily select the voltage gain which makes it simple to use.