Kit Library / Science / Physics
Quick KitShared by a Veda learner · Generated with Veda AI
Veda Bites are swipeable micro-lessons — each one teaches exactly one idea. Here's a taste from this kit; the app has the full deck.
A switch completes or breaks a circuit.
A switch is a simple device that either completes or breaks a circuit. When it completes the circuit, current flows and the device works. When it breaks the circuit, current stops flowing.
↳ A switch controls current flow by closing or opening a circuit.
Build your own switch with pins and cardboard.
↳ A homemade switch uses a movable conductor to open or close a gap.
Closed circuit means current flows.
When the safety pin touches both drawing pins, it closes the gap and completes the path. This is the ON position. The circuit is closed, and current flows from the cell's positive to negative terminal, making the lamp glow.
↳ ON = closed circuit = current flows = device works.
This topic covers how electric switches work by completing or breaking a circuit, including building a simple switch and testing it. It also introduces circuit diagrams and the standard symbols used to represent electric...
~8 min · full explanation, examples & memory tricks in the app
19 questions laddered from warm-up to topper-level, each with an explanation. A taste:
In the simple switch made in Activity 3.8, what is the role of the safety pin?
BeginnerIt acts as a conductor that can complete or break the circuit.
The safety pin, when touching both drawing pins, closes the gap and completes the path for current to flow. When it does not touch the second drawing pin, it breaks the circuit.
When the safety pin does NOT touch the second drawing pin, the circuit is said to be in the ___ position.
BeginnerOFF
When the safety pin does not touch the second drawing pin, the gap prevents current flow, and the circuit is open. This is called the OFF position.
In the symbol for an electric cell, the long line represents the ___ terminal.
Beginnerpositive
In the symbol for an electric cell, the long line represents the positive terminal, while the short line represents the negative terminal.
What happens to the lamp when the safety pin touches both drawing pins in the switch?
BeginnerThe lamp glows because the circuit is closed and current flows.
When the safety pin touches both drawing pins, it closes the gap and completes the path, allowing current to flow from the cell's positive to negative terminal, making the lamp glow.
15 flashcards in this kit — the app reviews them with spaced repetition so the right card returns on the right day.
Every game is built from this kit's own content — scores feed your mastery, so playing counts as studying.
The full Veda Bites deck, complete notes, spaced-repetition flashcards, leveled MCQs, tests and games for this kit — plus Daily Facts and the Arena, every day.
