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Therefore students can have difficulty grasping the ideas and principles involved and constructing understanding. Misconceptions may develop, with students believing electricity is a substance which gets used up. Understanding of electricity involves students acquiring a specialised specific set of vocabulary. However, although we cannot see electrical charges moving and transferring energy, the effect of the transfer can be seen.
The current flowing in an electrical or electronic circuit can suddenly increase when a component part fails. This can cause serious damage to other components in the circuit, or create a fire hazard. To protect against this, a fuse or a device called a "circuit breaker" can be wired into a circuit.
circuit diagrams utilise special symbols recognized by everyone who uses the drawings. The symbols on the drawings show how components like resistors, capacitors, insulators, motors, outlet boxes, lights, switches, and other electrical and electronic components are connected together.
Electric circuits are different than electronic circuits.
