Circuit Components & Symbols Flashcards
(6 cards)
1
Q
What does a resistor do in a circuit?
A
it limits the flow of electric current and provides resistance.
2
Q
What is the symbol for a battery or cell in a circuit diagram?
A
Two parallel lines of different lengths, the longer line is positive (+), the shorter is negative (−).
3
Q
What does a switch do in a circuit?
A
It opens or closes the circuit to stop or allow current flow.
4
Q
: What symbol represents a light bulb in a circuit diagram?
A
circle with a cross inside.
5
Q
What is the purpose of a fuse?
A
To protect the circuit by breaking the circuit if too much current flows.
6
Q
What does insulation do in electrical wiring?
A
Prevents electric shocks by stopping current from escaping the wire.
