5201slides7-ElectricalElements-II-resistor - ME-5201-001 (Mechatronics I 60996)

What is the primary function of a resistor in an electrical circuit?

To limit the flow of electric current.

Define the term 'resistance' in the context of electrical circuits.

Resistance is the opposition to the flow of electric current, measured in ohms.

What is the unit of measurement for resistance?

Ohms.

Fill in the blank: A resistor is used to __ in an electric circuit.

limit the flow of current.

What happens to the current in a circuit when resistance increases?

The current decreases.

Explain the relationship between voltage, current, and resistance.

According to Ohm's Law, voltage equals current multiplied by resistance (V = IR).

What is Ohm's Law?

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Fill in the blank: The symbol for resistance is __.

R.

What does a higher resistance value indicate about a resistor?

It indicates that the resistor will allow less current to flow.

What type of resistor can have variable resistance?

A potentiometer.

Fill in the blank: Resistors can be classified as and resistors.

fixed, variable.

What color coding system is used to identify resistor values?

The electronic color code.

What is a fixed resistor?

A resistor that has a constant resistance value.

What is the purpose of a variable resistor?

To adjust the resistance within a circuit.

Fill in the blank: In a series circuit, the total resistance is __ the sum of individual resistances.

equal to.

In a parallel circuit, how does total resistance compare to individual resistances?

Total resistance is less than the smallest individual resistance.

What is the function of a network of resistors in a circuit?

To achieve desired voltage and current levels.

When measuring resistance, what instrument is typically used?

A multimeter.

Fill in the blank: Resistors dissipate electrical energy in the form of __.

heat.

Name a common application of resistors in electronic devices.

Voltage dividers and current limiters.

What is the effect of temperature on resistor performance?

Resistance can change with temperature, affecting circuit performance.

What is a carbon resistor?

A type of fixed resistor made from carbon composition.

Fill in the blank: The maximum power a resistor can dissipate without failing is called __.

power rating.

What can happen if a resistor exceeds its power rating?

It may overheat and fail.

How are resistors typically packaged for use in circuits?

In various shapes and sizes, often in surface mount or through-hole styles.