What is a fuse? the basics explained

The video tutorial explains the role of a thin wire rated to handle a specific current, such as 3 amps or 19 quintillion electrons per second. It describes how a fuse acts as a weak point in a circuit, burning out to protect expensive electrical components if too much current flows. Fuses are cheap to replace and are commonly found on circuit boards and in UK plugs for added safety.

What is the current rating of the wire mentioned in the video?

• 5 amps

• 3 amps

• 10 amps

• 1 amp

How many electrons per second does the wire handle at its rated current?

• 19 quintillion, 272 quadrillion

• 10 quintillion, 500 quadrillion

• 15 quintillion, 300 quadrillion

• 25 quintillion, 100 quadrillion

What happens to a fuse when too much current flows through it?

• It increases the voltage

• It reduces the current

• It burns out and breaks the circuit

• It strengthens the circuit

Why is a fuse considered a weak point in a circuit?

• It is designed to break easily to protect other components

• It decreases the circuit's efficiency

• It is expensive to replace

• It increases the circuit's resistance

Where can fuses commonly be found according to the video?

• In batteries

• In circuit boards and UK plugs

• In light bulbs

• In power cables