17 Flashcards
What are the essential components of an electric circuit?
Load components, source of energy, connecting wires, control/switch
Most circuits also include a control or switch to manage the flow of current.
What happens when a connection is made in an electric circuit?
Current will flow
This indicates that the circuit is complete and allows electricity to pass through.
Name three components used in electric circuits.
- Lamp
- Battery
- Resistor
These components serve various functions in controlling and utilizing electric current.
What is the unit of measurement for current?
Amps (A)
Current is typically measured using an ammeter.
What is the unit of measurement for voltage?
Volts (V)
Voltage is measured using a voltmeter.
What type of circuit has only one path for current to flow?
Series circuit
In a series circuit, all components are connected along the same path.
In a series circuit, how does current behave?
Current is the same everywhere in the circuit
This means that all bulbs in a series circuit will glow equally bright.
What happens to current in a parallel circuit when more bulbs are added?
Current increases
This is because each additional path allows more current to flow.
Define static electricity.
Build up of charge on the surface of an object
Static electricity does not flow and remains in one area.
How is static electricity formed?
When two surfaces touch and electrons are transferred
This results in one object having a positive charge and the other a negative charge.
What is the equation for total voltage in a circuit?
V total = V measured
This equation is used to determine the total voltage in a circuit.
Fill in the blank: Current is measured in _______.
Amps (A)
This highlights the unit used for measuring electric current.
What is the symbol for a variable resistor?
The symbol varies, typically represented by a zigzag line
Variable resistors are used to adjust the resistance in a circuit.
True or False: In a series circuit, adding more components will increase the total current.
False
Adding more components in a series circuit can actually decrease the current due to increased resistance.
