Electricity’s Flashcards
(16 cards)
Which component provides power to the circuit?
A cell, battery (combination of cells) or power supply provides power to the circuit.
Which component measures the current or flow of charge through the circuit?
An ammeter measures the current (flow of charge) through the circuit. Current is measured in units called amps.
What can be connected together to form a circuit?
Electrical components, like
motors and lamps
What are cells
Cells
provide the energy for many electrical devices to function - like torches, mobile phones and laptops. Cells come in different sizes and shapes.
What are batteries?
A battery is made of two or more cells connected together.
What does the circuit symbol look like?
The circuit symbol for a battery is made by joining two or more cell symbols.
What can batteries be used for?
Batteries can also be used to power electric vehicles, or to store energy from solar panels which can later be used to power your home.
What as a circuit diagrams?
A circuit diagram uses circuit symbols to represent each component in the circuit.
What is current?
When a circuit has been connected correctly, an electrical
current
flows. Just like a current in a river is a flow of water, an electrical current in a wire is a flow of
electrons.
What is current measured in?
Current is measured using a device called an
ammeter
. Some types of ammeter have a pointer on a dial, but most have a digital display.
What is potential difference?
Potential difference is the amount of energy transferred by each unit of charge passing between two points of a circuit.
What is potential difference measured in?
The unit of potential difference is the volt. The symbol for volts is V.
How are components, like motors, lamps and cells, represented in a circuit diagram?
Circuit symbols represent each component
Pictures represent each component
Words represent each component
Letters represent each component
Circuit symbols represent each component
What is the difference between a battery and a cell?
A cell is made by joining two or more batteries together
A battery is made by connecting two or more cells together
Batteries can be recharged, but cells cannot
Cells can be recharged, but batteries cannot
A battery is made by connecting two or more cells to
How is an ammeter connected into a circuit?
In series, on the left hand side of the circuit
In parallel, anywhere in the circuit
In series, anywhere in the circuit
In parallel, with one lead on each side of the cell, battery or component
In series, anywhere in the circuit
How is a voltmeter connected into a circuit?
In parallel, with one lead on each side of the component
In series, next to the component
In parallel, anywhere in the circuit
In series, anywhere in the circuit
parallel, with one lead on each side of the component
