Concept 1 of 9Foundation
Watch on YouTubeVideoElectric current & circuits
Electric current = flow of charge (tiny electrons) through a material.
A circuit is a closed loop that lets current flow continuously. Break the loop anywhere → current stops.
Basic parts:
- Cell/battery — energy source with + and − terminals.
- Wires — carry the current.
- Bulb — converts electricity into light (and heat).
- Switch — makes or breaks the loop.
Example
A torch: cells + wires + bulb + switch. Flip switch ON → loop closes → bulb lights.
💡 Tip:If your bulb doesn't glow, the FIRST check is: is the loop complete?
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5 questions to check what you just read.
0 / 5
- Q1.An electric circuit needs to be:
- Q2.Current is flow of:
- Q3.Parts of a simple torch circuit:
- Q4.If switch is OFF, circuit is:
- Q5.Cell's two ends are: