In an electrical circuit, the symbol " " represents _. A. a battery B. a resistor C. a capacitor D. an inductor 相关知识点: 试题来源: 解析 A。解析:这个符号在电路中代表电池(battery)。B选项电阻器的符号不是这个;C选项电容器有其特定符号;D选项电感器也有其专门的符号。
That’s something that a lot of beginners will argue against. “If the resistor reduces current, there must be less current coming out of it, no?” And because they get this wrong, they have a hard time understanding circuits in general. Resistor in Circuit Diagram: Current is equal everyw...
In a simple circuit experiment, we use a battery to provide power. Which part of the circuit is used to control the flow of electricity? A. Resistor B. Wire C. Bulb D. Switch 相关知识点: 试题来源: 解析 D。解析:在电路实验中,电池提供电能。电阻器(Resistor)主要用于阻碍电流,调节电流大小...
A certain electric circuit obeys Ohm's law. If the resistance of the circuit is doubled, what will happen to the current through the circuit? When there is a current of 1.72 A in a resistor, the voltage drop across it is 7.35 V. If a voltage of 12 V is ap...
A resistor manufacturing method, a resistor and an electric circuit are provided. The resistor comprises: an insulation matrix; the resistor disposed on the insulation matrix; a first electrode and a second electrode which are separately connected to the resistor; a first conducting layer overlapped ...
2 A student is investigating a circuit containing resistors.He is using the circuit shown in Fig. 2.1.Resistor X has a resistance R = 1.power supply Fig.2.1(a)On Fig. 2.1, draw a voltmeter connected so that it measures the potential difference (p. d.)across resistor X.[1](b)The st...
How do you find the current in a resistor in a parallel circuit? Resistance in Parallel: Two resistances are said to be in parallel if the one terminal of a resistor is connected to the one terminal of the other resistor, and a similar connection is made with their other terminal...
5.1 are made from nichrome wire of uniform radius 240 um.The length of this wire needed to make each resistor is 0.67 m.Calculate the resistivity of nichrom e. 相关知识点: 试题来源: 解析 (b)(i)(current in R or R: =)0.30+0.30(=0.60 A)(R=)2.4/0.60 = 4.0(Q)or(p.d. across ...
In a series circuit, there is only one path for the current to flow through the circuit. The current output of the first resistor flows into the second resistor, the output of the second flows into the third, and so on. This means that the current is the same in each resistor. ...
In electronic circuits, resistors are very often connected in series or in parallel. A circuit designer might, for example, combine several resistors with standard values (E-series) to reach a specific resistance value. For series connections, the current through each resistor is the same and the...