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Anonymous users2024-02-11In the series circuit, the switch is closed, the two bulbs emit light at the same time, and the two bulbs are off when the switch is disconnected, indicating that the switch in the series circuit can control all the electrical appliances.
2.Parallel circuit: the circuit composed of connecting the components in parallel, as shown in the figure, is characterized by the fact that the current of the trunk circuit is divided into two parts in the branches, and flows through each element in the two branches respectively. For example: the connection of various electrical appliances in the home.
In the parallel circuit, the switch on the trunk road is closed, the switch on the branch road is closed, the bulb will shine, the switch on the trunk road is disconnected, the switch on each branch road is closed, and the bulb will not emit light, indicating that the switch on the trunk road can control the entire circuit, and the switch on the branch road can only control the branch.
3.Features of series and parallel circuits:
In a series circuit, since there is only one path of current, the current flowing from the positive terminal of the power supply will flow through each consumer one by one and finally back to the negative terminal of the power supply. Therefore, in the series circuit, if one of the electrical appliances is damaged or disconnected somewhere, the whole circuit will become an open circuit, the circuit will have no current, and all the electrical appliances will stop working, so in the series circuit, several electrical appliances are implicated in each other, either all of them or all of them stop working.
In a parallel circuit, the current flowing from the positive terminal of the power supply is divided into two branches at the branches, each with current flowing through it, so that even if one branch is disconnected, the other branch will still form a path with the trunk circuit. It can be seen that in a parallel circuit, the branches are not implicated with each other.
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Anonymous users2024-02-10Series Connection: The currents are all equal The voltage is unequal The total voltage is equal to the sum of the voltages at both ends of each appliance.
Parallel: The voltage is equal, the current is not equal, and the total current is equal to the sum of the currents of each sub-circuit.
What else do you have?
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Anonymous users2024-02-091. Series circuit: The circuit connected in series is called a series circuit.
Several circuit elements are connected to each other along a single path, and each connection point can connect up to two components, which is called series connection.
There is only one channel of current in a series circuit, so the current in a series circuit is equal.
2. Parallel circuit: The circuit connected in parallel is called a parallel circuit.
The connection mode of circuits, circuits or components to achieve the functions required by a certain design refers to the connection of multiple components, circuits, lines and other heads of the same or different classes, and at the same time the tail and tail of the calendar state are also connected in a connection method called parallel connection.
In parallel, the current has multiple channels and the trunk current is equal to the sum of the branch currents.
The physics teacher said that the trunk current in the parallel circuit is equal to the sum of the currents of each branch, and the trunk circuit changes with the branch, for example, a parallel circuit with 2 bulbs, and the current is 1A each, then the trunk circuit is 2A; If you merge another bulb, the trunk circuit becomes 3A, and the brightness of the original 2 bulbs does not change, right? >>>More
Series circuit: Several circuit elements are connected to each other along a single path, and each node is connected to a maximum of two components, this connection method is called series connection. Circuits that are connected in series are called series circuits. >>>More
1.Series circuit: A circuit composed of connecting components one by one. >>>More
Series connection, that is, only one circuit can go from the positive to the negative, and the parallel circuit, that is, there are multiple ways that can go from the positive to the negative, which produces many invariants, the current of the series circuit is constant, and the voltage of the parallel circuit is unchanged Related formulas: i=u r (ohm rate) p=w t (electrical power definition formula, universally applicable) p=ui (electrical power calculation formula, universally applicable) p=i square r (suitable for calculating the electric power formula of some electrical appliances in series circuits, and also a formula for pure resistance circuits) p=u square r (suitable for calculating the total power of series circuits, that is, the voltage is unchanged, as well as the total power of parallel circuits and the power formula of electrical appliances in part of the branches, the applicable frequency is the highest, pure resistance circuit formula), when calculating, it is necessary to see the invariants clearly, and extract some of the amounts it gives according to the needs of the problem, and select the appropriate formula, as well as electrical work, that is, multiply the time by the previous formulas, The first formula is deformed, as for electric heating, it is necessary to remember a universally applicable formula, q=i square rt, which is often used, and the others are also multiplied by the last time, which are pure resistance circuit electric heating formulas, probably that's it, it's not difficult in practice, and you will be familiar with it when you practice doing more.
The switch controls the entire circuit at any location, i.e. its role is independent of its location. There is only one path for the current, and the current that passes through one lamp must pass through the other. If one light goes out, the other must go out. >>>More