According to the Ohm's law, the potential difference across any resistance or the circuit is equal tot the product of the current flowing through it and the resistance of the resistor or the circuit.Answer and Explanation: Potential difference defined as the work-done or the energy that is ...
解析 A。“potential difference”电势差是驱动电流的力。选项 B“the rate of flow of electric charge”是电荷的流动速率;选项 C“the opposition to the flow of electric current”是对电流的阻碍;选项 D“the electrical energy stored in a conductor”是导体中储存的电能。
The potential difference across the battery terminals is 6.0V.(i) Use Fig. 5.2 to show that the current in the battery is 0.40 A.[2](ii) Calculate the internal resistance r of the battery.r=... [2](iii) Determine the ratio resistance of lamp A resistance of lamp B ratio =......
where I is the current in amperes, V is the potential difference between two points of interest in volts, and R is a circuit parameter, measured in ohms (which is equivalent to volts per ampere), called the resistance. Ammeter Operation – Today’s ammeters have an internal resistance to ...
The potential difference between two places can be expressed as a voltage. Voltage is the “pressure,” as it were, that makes electricity flow. In physics, voltage can be calculated using Ohm’s Law, which tells us that voltage equals resistance times current. Resistance indicates the difficult...
What is the potential difference across2μFcapacitor in the circuit shown? View Solution What is the potential difference across 2μF capacitor in the circuit shown? View Solution What is the potential differenceVB−VAwhen the currentiis5Aand is decreasing at a rate of103A /s ...
百度试题 结果1 题目 ___ electric current flows through a wire, there is a potential difference. As far as As long as Even if As if 相关知识点: 试题来源: 解析 B 反馈 收藏
What is the potential difference Vb−Va shown in the circuit below? Potential Difference The product of the current carrying in a conductor to the resistance experienced in it is known as the potential difference.The measurable unit used for the measurement of the potential difference ...
Where I is the current in amperes, V is the potential difference in volts, and R is a constant, measured in ohms, called the resistance. Current is directly proportional to voltage loss through a resistor. That is, if the current doubles, then so does the voltage. To make a current flo...
百度试题 结果1 题目The current-voltage behavior of an electrical device is shown below:When the potential difference across the device is \(3\,V\), what is its resistance?相关知识点: 试题来源: 解析 \(1.2\,\Omega\) 反馈 收藏