Circuits
Physics · परिपथ · 12 facts
1
Circuit: closed loop for current from source through components
2
Open: no current; Closed: current flows; Short: excess current danger
3
Components: cell, resistor, switch, bulb, ammeter, voltmeter, fuse
4
Ammeter: series (low R); Voltmeter: parallel (high R)
5
Rheostat: variable resistor controlling current
6
Wheatstone Bridge: precise unknown resistance measurement
7
Potentiometer: EMF measurement without drawing current
8
EMF: total cell voltage including internal resistance
9
Three-pin: Live(red), Neutral(black), Earth(green-safety)
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Domestic parallel wiring: each appliance full voltage, independent
11
Circuit diagram uses standard symbols for each component
12
Series circuit: if one component fails, entire circuit breaks