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Physics (circuts)

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The property of the circuit or substance which opposes or hinders the flow of an electric current
Resistance
difference in electrical potential energy between two points in a an electric circuit
Potential Difference
The current in a circuit supplied by a battery has a definite direction
Polarity

consisting of the flow of charged particles
Electric Current
Type of battery used in portable X-ray
Nickel Cadmium
Consists of hard rubber or plastic case containing sulfuric acid in which two electrodes are immersed, one lead and the other lead oxide
Wet Cell
Process of preventing polarization.
Porous cup containing manganese dioxide material placed around the positive electrode
Depolarization
Build up of hydrogen bubbles of the copper electrode until the entire electrode surface is surrounded
Polarization
Solution which chemically acts upon the electrodes which are placed in it.
May consist of salt, acid or alkaline material and is found in liquid or past form
Electrolyte
Most basic type of chemical cell
Voltaic Cell
The fundamental unit of a battery
Cell
Used to measure electrical resistance
Ohmmeter
Used to measure electrical energy
Watt hour meter
Electric power consumed in a circuit is equal to the product of the current and the voltage
Wattmeter
Used to measure the difference of potential between two points in a circuit
Voltmeter
Used to measure the flow of current through a conductor
Ammeter
Instrument used to indicate the presence, strength and direction of very small currents in a circuit
Galvanometer
Conductor wound in the form of a coil, the magnetic field depends upon the number of turns in the coil, and the amount of current flowing through it
Magnetic Effect
When an electric current flows through a conductor heat is created. The more current that flows through a conductor the more it is heated
Thermal Effect
Parts of basic metering device
Pointer
Case
Scale
Movement
Circuit in which there are more than one path for the current to flow. the components are branches of the main circuit
Parallel Circuit
Circuit which the current has but one path to travel. All component parts are connected end to end
Series Circuit
Law that states that the value of the current in a metallic circuit equals the potential difference divided by the resistance
Ohm's Law
Type of Material
Length
Cross sectional area
Temperature
Factors that affect the resistance of conductors
Factors that affect electrical current
Voltage
Current
Resistance
Part supplied with power
Load or resistance
Path which current flows
Conductor
Source of Power
Battery
Battery
Conductor
Load or Resistance
Parts of simple electric current
4 Conditions under which electric current occurs
Vacuum
Gas
Ionic Solution
Metallic Conductor
If the circuit is broken at any point and current can no longer flow through out the circuit
Open Circuit
Current flows only when there is a source and the switch is closed
Closed Circuit
Moving particles that carry an electric charge
Current Carriers
Science of electric charges in motion, it is also known as current electricity
Electrodynamics
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