Different ways of controlling electrical currents Flashcards
How can we control the brightness of bulbs in a circuit?
By correctly wiring a rheostat
Recall resistance is measured in ohm.
Resistance is measured in ohms (Ω). In electrical terms, resistance refers to how much a component opposes the flow of electric current. The higher the resistance, the less current will flow through.
Describe rheostats as variable resistances
A rheostat is a variable resistor which is used to control current. They can vary the resistance in a circuit without interruption.
Explain how volume controls work
Volume controls are devices or features that let you change the loudness of sound on things like radios, TVs, or speakers. They can be knobs, buttons, or sliders, and they help you make the sound louder or softer based on your preference.
How do household dimmer switches work?
They let you adjust the brightness of your lights. They allow you to make them brighter or dimmer. You can control the brightness with a knob or slider
Explain how fuses work
They protect electrical circuits by breaking the connection when the current exceeds a certain limit.
