P4 - Electric Circuits Flashcards
A Circuit Diagram shows you how the Components in a _________ are connected together.
Circuit.
Every Component has its own _________.
Symbol.
A Cell is necessary to push ____________ around a Complete Circuit.
Electrons.
A __________ Consists of Two or More Cells.
Battery.
The (+) Symbol next to the long Line of the Cell indicates what?
It is the Positive Terminal of the Cell.
A __________ Enables the Current in a Circuit to be Switched ‘On’ or ‘Off’.
Switch.
A Light-Bulb is designed to emit ________ as a Signal when a Current passes through it.
Light.
A Diode allows __________ through in One Direction only.
Current.
A Light-Emitting Diode (____) emits Light when a Current passes through it.
LED.
An Ammeter is used to Measure Electric _________.
Current.
A Fixed Resistor Limits the _________ in a Circuit.
Current.
A Variable Resistor allows the __________ to be Varied.
Current.
A Fuse is designed to ‘break’ the Circuit if the __________ is greater than a Certain Amount.
Current.
A Heater is designed to Transfer the __________ from an Electric Current to _____ the surroundings.
Energy…Heat…
A Voltmeter is used to Measure Potential _____________ (Voltage).
Difference.
An Electric Current is a Flow of ________.
Charge.
Each Electron carries a ____________ Charge.
Negative.
Metals contain lots of Electrons that move freely between Positively ___________ Metal Ions.
Charged.
The Size of an Electric __________ is the Rate of _____ of Electric Charge.
Current…Flow…
The Bigger the Number of Electrons that pass through a ________________ each Second, the Bigger is the Current passing through it.
Component.
What is Electric Charge Measured in (C)?
Coulombs.
What is Electric Current Measured in (A)?
Amperes (Amps).
What is the Equation for Electric Current of a Circuit?
Current (I) = Charge Flow (Q) / Time Taken (T)
What is the Equation for Potential Difference across a Component?
V = Energy Transferred (Joules) / Charge (Coulombs)
