How do we measure electricity?
Published on Apr 12, 2016
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How do we measure electricity?
Photo by charlesdyer
Size of the current depends on the number of electrons flowing or moving through the circuit
Photo by james_clear
more electrons=larger current
fewer electrons=smaller current
Photo by Billy Wilson Photography
Volts measure the pressure under which current flows
Photo by James Cridland
higher voltage=more force or pressure
Photo by أحمد عبد الفتاح Ahmed Abd El-fatah
Power is the rate at which work is done or energy is used.
Electric power is measured in watts
Photo by Theen ...
P= V I
power = voltage (current)
watts = volts (amps)
Photo by kevin dooley
Ohms measure the resistance or opposition to flow
Photo by Harout's Lens
Resistance is the force that tries to stop or slow the flow of electrons
Photo by Javier Domínguez Ferreiro
current=voltage/resistance
I = V/R
voltage=current x resistance
V = I x R
resistance=voltage/current
R = V/I
Photo by Supernico26
