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 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...
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 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 =......
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
Find the current I_1, I_2, I_3 flowing through resistors and their potential difference. What is the difference between changed variable and measured variable? What are the units for momentum? Is a Joule a unit of energy? What are possible correct units for g in the SI system of units...
Voltage is the pressure from an electrical circuit’s power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light.
If E is the emf of a cell of internal resistance r and external resistance R, then potential difference across R is given as View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium