Exam (elaborations)
Unit 4_ Electric Circuits (1)
- Institution
- LPSP1202 - Chapitre 12 - Troubles Du Sommeil
Unit 4_ Electric Circuits (1)
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Unit 4: Electric CircuitsCurrent-✅The continuous flow of charge
Average current-✅Iavg = change in charge/ change in time
Battery-✅A battery is a device that maintains an electric potential
difference between the two terminals.
✅
Direct current- The flow is from higher potential to lower potential. The
electricity also flows in that direction called direct current.
✅
Resistance- It is the impedance to the flow of electricity through a
material. Asa charge moves through a material, it eventually hits a
non-moving nucleus in the material.
✅
Resistivity- It can be thought of as the density of nuclei the electrons may
strike.
R=ρl/A
R = resistance of the circuit
ρ = resistivity
l = length
A = cross-sectional area
low resistivity-✅conductors
high resistivity-✅insulators
resistors in series-✅R eq = R1 + R2
resistors in parallel-✅1/Req = 1/R1 + 1/R2
Ammeter-✅An ammeter is a device with a very low resistance that
measures the current.
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