FT series :solar inverter dc to ac inverter
Ohm prepared conductors with the same cross-section but different lengths, connected each conductor to the circuit in turn for experiments, observed the magnitude of the deflection angle of the magnetic needle pulled by the torsion force, and then changed the conditions to repeat the operation. According to the experimental data, the following relationship was summarized:
x=q/(b+l) where x represents the magnitude of the current flowing through the wire, which is proportional to the current intensity, A and B are the two parameters of the circuit, and L represents the length of the experimental wire.
In April 1826, Ohm published a paper, rewriting Ohm's law as: X=KSA/L, s is the cross-sectional area of the wire, K is the conductivity, A is the potential difference between the two ends of the wire, L is the length of the wire, and X is the pass through L the current intensity. If the resistance l'=L/KS is substituted into the above formula, X=A/I' is obtained, which is the quantitative expression of Ohm's law, that is, the current intensity in the circuit is proportional to the potential difference and inversely proportional to the resistance. To commemorate Ohm's contribution to electromagnetism, the physics community named the unit of resistance as Ohm, represented by the symbol Ω. 1 ohm is defined as the resistance through which exactly 1 amp of current flows when the potential difference is 1 volt.
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