Current And Change Flashcards
A Cell is Necessary to Push ______________ Around a Complete Circuit. A Battery Consists of _______ or More Cells.
Electrons…Two…
A Switch Enables the Current in a ___________ to be Switched On or Off.
A Circuit.
An Indicator is Designed to Emit ________ as a Signal when a Current Passes through it.
Light.
A Diode Allows Current through in ______ Direction Only.
One.
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 Current to be _________.
Varied.
A Fuse Designed to Melt and Therefore ‘_________’ the Circuit if the Current through it is Greater than a Certain __________.
Break…Amount…
A Heater is Designed to Transfer the __________ From An Electric Current to Heat the Surroundings.
Energy.
A Voltmeter is Used to Measure ____________ Difference.
Potential.
An Electron Current is a ________ of Charge.
Flow.
Metals Contain Lots of ____________ that Move about Freely Between the Positively Charged Metal Ions. These Electrons Stop the Ions __________ Away From Each Others.
Electrons…Moving…
The Current in the Circuit Transfers __________ From the Cell to the Torch ______.
Energy…Bulb…
The Size of an Electric Current is the Rate of ______ of Electric Charge. The Bigger the Number of Electrons that Pass Through a Component Each Second, the Bigger is the Current ___________ through it.
Flow…Passing…
