The voltage across a resistor in a circuit is 12 volts and the current through it is 2 amperes. What is the resistance of the resistor? A. 6 ohms B. 8 ohms C. 10 ohms D. 14 ohms 相关知识点: 试题来源: 解析 A。解析:根据欧姆定律,电阻等于电压除以电流,12 伏除以 2 安等于 6 欧...
30 The diagram shows a lamp and a resistor connected in a circuit. The lamp is too bright.Which change to the circuit will decrease the current in the lamp and make it less bright? B A connecting another resistor in parallel with the one in the circuit B connecting another resistor in ...
Sounds boring and pretty useless, but it’s actually an extremely useful component. Once you know the basics of the resistor – and how it works with currents and voltages in a circuit – you’re in charge 😎. Here’s something that’s important to know about the resistor: The amount ...
A resistor unit is adapted for use in a constant current source circuit or a temperature compensating circuit for providing temperature compensation to a constant voltage reference circuit. The resistor unit includes at least one first resistor, and at least one second resistor coupled to the first...
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 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...
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...
• We should make measurements of the terminal p.d. and current through the circuit using the voltage and ammeter; (用电压表测终端电压,电流表测电路电流) • The current is changed by adjusting the variable resistor,we should take at ...
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