Which type of resistors are designed to provide a constant, steady resistance value?

Which type of resistors are designed to provide a constant, steady resistance value?

• A. Fixed resistors
• B. Variable resistors
• C. Thermistors
• D. Photoresistors

Answer: (A)

Resistors come in varieties that either hold steady values or vary with a stimulus. The main idea here is stability: fixed resistors are manufactured to have a specified resistance and maintain that value within a tolerance, regardless of changes in temperature, light, or other conditions within normal use. Variable resistors are designed to change their resistance on purpose, for calibration or control. Thermistors have resistance that changes with temperature, often used for temperature sensing or compensation. Photoresistors change resistance with incident light, used in light sensing circuits. Thus, the type intended to provide a constant, steady resistance value is the fixed resistor.

Resistors come in varieties that either hold steady values or vary with a stimulus. The main idea here is stability: fixed resistors are manufactured to have a specified resistance and maintain that value within a tolerance, regardless of changes in temperature, light, or other conditions within normal use. Variable resistors are designed to change their resistance on purpose, for calibration or control. Thermistors have resistance that changes with temperature, often used for temperature sensing or compensation. Photoresistors change resistance with incident light, used in light sensing circuits. Thus, the type intended to provide a constant, steady resistance value is the fixed resistor.