Question

question 33

what device is designed to open and disconnect a circuit in the event of excessive current?
a. wire
b. fuse
c. power supply
d. potentiometer

Explanation:

Identify the function of circuit protection devices

Using the Circuit Protection and Fuses and Breakers knowledge points

• A fuse contains a metal strip or wire that melts when excessive current flows through it, which opens the circuit and stops the current flow to prevent damage or fire.
• A wire simply conducts current.
• A power supply provides electrical energy.
• A potentiometer is a variable resistor used to adjust voltage or current levels manually.

Answer:

• a. wire
• b. fuse (Correct answer)
• c. power supply
• d. potentiometer