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Energy Transfer
2
Current (I):
Resistance (R):
Voltage (V):
Ohm's Law
The law of conservation of energy stayes that the total amount of energy in a closed system remains constant.
The flow of electrons, measured by the number of electrons that pass a given point per second. The greater the constant the greater the flow of electrons.
Energy
Transfer
The measure of energy available to move electrons. The greater the voltage the more electron movement.
The opposite of flow of electrons. It produces heat, light, or mechanical energy. The longer/thinner the wire or greater the temperature, the greater the resistance.
Electrons will flow from an aera of high concetration to an area of low concentration but it takes energy to move the electrons.
Volts (V)
Amps (A)
Ohms (Ω)
Energy can be converted from one form to another, but cannot be created or destroyed.
Electical Current
Series Circuit
Parallel Circuit
Circuits
I=V/R
Any path along which electric charge can flow is known as a
circuit.
Multiple-pathway circuit
Single-pathway circuit
I=V/R or V=IR or R=V/I
Wavelength and Frequency
Spectrum
Electromagnetic Spectrum
Shortest Wave Length
Longest Wave Length
Radiation is defined by its wavelenth, frequency, and energy.
Wavelength is the distance from peak and crest.
Least Amount of Energy
Most Amount of Energy
X-Ray
UV
Gamma Ray
Radio
Inframed
is the continuum of all electromagnetic waves arranged according to frequency and wave length.
Speed of Light
Microwaves
Visible
Frequency =
Wavelength
Hertz (Hz)
Metres (m)
Electromagnetic Spectrum
is the continuum of all electromagnetic waves arranged according to frequency and wave length.
What is total voltage accross the circuit?
What is value of the first resistor?
What is the current for the following cicuit?
A. 5/3
A. 5
A. 3/4
B. 6.2
B. 1/3
B. 8.93
C. 15
C. 3/2
D. 6/10
D. 5
D. 4/3
What is value of the first resistor?
What is total voltage accross the circuit?
What is the current for the following cicuit?
A. 1/2
A. 2/3
A. 4
B. 2.25
B. 0.76
B. 6
C. 4
C. 39
C. 3/2
D. 2
D. 1/4
D. 2