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2959517
Electricity
Description
Form 5 SPM Physics - Electricity
No tags specified
electricity
physics
form 5
spm
Mind Map by
whytwocare
, updated more than 1 year ago
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Created by
whytwocare
over 9 years ago
141
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0
Resource summary
Electricity
Fundamental
Charge
Q = ne
Current
I = Q/t
Potential Difference
V = IR
Circuit
Series
R = R1 + R2
I = I1 + I2
V = V1 + V2
Parallel
R = 1 / (1/R1 + 1/R2)
I = I1 +I2
V = V1 = V2
EMF
E = I(R +r) = V + Ir
Electrical
Energy
E = QV
Power
P = W/t
P = V^2 / R
P = IV
P = I^2.R
Efficiency = (Output Power / Input Power) x 100%
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