* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download circuit
Fault tolerance wikipedia , lookup
History of electromagnetic theory wikipedia , lookup
Stepper motor wikipedia , lookup
Ground loop (electricity) wikipedia , lookup
Power engineering wikipedia , lookup
Ground (electricity) wikipedia , lookup
Mercury-arc valve wikipedia , lookup
Electrical ballast wikipedia , lookup
Voltage optimisation wikipedia , lookup
Switched-mode power supply wikipedia , lookup
History of electric power transmission wikipedia , lookup
Two-port network wikipedia , lookup
Electrical substation wikipedia , lookup
Flexible electronics wikipedia , lookup
Power MOSFET wikipedia , lookup
Integrated circuit wikipedia , lookup
Circuit breaker wikipedia , lookup
Stray voltage wikipedia , lookup
Buck converter wikipedia , lookup
Mains electricity wikipedia , lookup
Surge protector wikipedia , lookup
Current source wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Earthing system wikipedia , lookup
Rectiverter wikipedia , lookup
RLC circuit wikipedia , lookup
Opto-isolator wikipedia , lookup
Voltage, Current and Resistance in Circuits S1-3-15 S1-3-16 S1-3-17 Compare and contrast voltage (electric potential difference) and current in series and parallel circuits. Include: cells, resistance. Investigate and describe qualitatively the relationship among current, voltage (electric potential difference), and resistance in a simple electric circuit. Relate the energy dissipated in a circuit to the resistance, current, and brightness of bulbs. Relationships in Series Circuits: Remember that a series circuit has only one path for electrons to follow. Because of this, there are basic relationships (rules) that are true in all series circuits: 1. The same current flows through each part of a series circuit. In a series circuit, the AMPERAGE (current) at any POINT in the circuit is the SAME. Notice from the diagram that 1 AMP continually FLOWS through the circuit. 2. The total resistance of a series circuit is equal to the sum of individual resistances. In a series circuit you will need to CALCULATE the TOTAL RESISTANCE. This is done by ADDING up the RESISTANCE of each component in series. 3. The sum of the individual voltage drops equals the total voltage of the power source. The voltage from the battery or cell is DIVIDED up amongst all the loads, so therefore: V total = V1 + V2 + V3 ... In our example, this means that 5V + 5V = 10V. All the ENERGY going into the circuit is used by the LOADS. 4. If the circuit is broken at any point, no current will flow. The best way to illustrate this is with a string of LIGHT BULBS. If one is BURNT out, the whole thing STOPS working. Relationships in Parallel Circuits: Remember that a parallel circuit has many paths for electrons to follow. Because of this, there are basic relationships (rules) that are true in all parallel circuits: 1. A parallel circuit has two or more paths for current to flow through. Remember that PARALLEL means TWO PATHS up to THOUSANDS of PATHS. The flow of electricity is DIVIDED between each according to the RESISTANCE along each route Every time a path is ADDED, more current can FLOW. 2. Voltage is the same across each component of the parallel circuit. Every path will get the FULL AMOUNT of ENERGY that the power source is PRODUCING. This is why LIGHTS that are wired in PARALLEL are BRIGHTER than those wired in SERIES 3. The total current from the source is divided amongst each path. The current in each path of the CIRCUIT must ADD to equal the SOURCE current. Each time a new path is ADDED, the total current will INCREASE 4. If one of the parallel paths is broken, current will continue to flow in all the other paths. The best way to illustrate this is also with a string of LIGHT BULBS in PARALLEL. If one is BURNT out, the others STAY LIT. Summary of Series and Parallel Circuits: Relationship Number of paths Current Voltage Resistance Brightness of Lights When a path is broken Series Parallel