A resistor reduces current flow. In a schematic, this is represented with a few zig zag squiggles. We're showing the US/Japan version of this symbol (IEEE). The UK uses a simple box over a straight line (IEC). There are also symbols for variable and adjustable resistors as well as thermal and preset resistor
2.Switch
Disconnects the current when open. We're showing a simple SPST (single-pole single-throw) toggle switch, but there are variations for SPDT, pushbutton, dip, relay, and more. For a complete list of switch symbols, check out SmartDraw's electrical symbol library.
3.Capacitor
A capacitor symbol shows two terminals running into plates. The curved plate indicates that the capacitor is polarized. The curved side has lower voltage. A small plus sign can be added to the straight side indicated the positive pin.
4.Fuse
A fuse protects electrical circuits by stopping the flow of current when the intensity of current exceed a set value. It does this by melting a special wire.
Answers & Comments
Answer:
1.Resistor
A resistor reduces current flow. In a schematic, this is represented with a few zig zag squiggles. We're showing the US/Japan version of this symbol (IEEE). The UK uses a simple box over a straight line (IEC). There are also symbols for variable and adjustable resistors as well as thermal and preset resistor
2.Switch
Disconnects the current when open. We're showing a simple SPST (single-pole single-throw) toggle switch, but there are variations for SPDT, pushbutton, dip, relay, and more. For a complete list of switch symbols, check out SmartDraw's electrical symbol library.
3.Capacitor
A capacitor symbol shows two terminals running into plates. The curved plate indicates that the capacitor is polarized. The curved side has lower voltage. A small plus sign can be added to the straight side indicated the positive pin.
4.Fuse
A fuse protects electrical circuits by stopping the flow of current when the intensity of current exceed a set value. It does this by melting a special wire.