Since the resistance of some conductor, such as a piece of wire, depends on collisions within the wire itself, theresistance depends on temperature. With increasing temperature, the resistance of the wire increases as collisions within the wire increase and "slow" the flow of current. Does resis...
6. The V-I graph for a conductor makes angle with V- axis, what is the resistance of the conductor?E AnSWer:R=Cotθ 相关知识点: 试题来源: 解析 http://gallery.fbcontent.cn/latex?decode=false&latex=%24%24R%3DCot%5Ctheta%20%24%24%25&fontSize=30 ...
Hello again My textbook states that: "Resistance of a given conductor is due to the collisions of free electrons with the ions or atoms of the conductor...
In addition, conductors have low resistance and high thermal conductivity. Further, a conductor placed in a magnetic field does not store energy. Finally, both ends of the conductor are at the same potential. Electricity flows through the conductor when the potential is changed at one end, which...
An electric potential difference (a voltage) applied externally across a conductor causes an electric field inside it, and a flow of charge (a current). Conductance (the reciprocal of resistance) is current per voltage, the rate of flow of charge per potential difference. Its SI unit is the...
What happens to the resistance as the conductor is made thicker? Explain using an example how to charge an object positively using only a negatively charged object. Discuss the electric nature of conductors. How does a van de graaff work?
Conductance of a conductor also depends on factors like shape, size, and a specific property known as its conductivity. Conductivity is expressed as and measured as Siemens per meter. The opposite of resistance is conductivity. Since resistance is the opposite of the current flow, conductance is ...
effectcauses a reduction in the cross-sectional area through which the current flows and, as we saw in a previous equation, the cross-sectional area decreases when theresistanceincreases. The same condition is a contributor toACimpedance. This is shown in the following figure and equation...
What causes currents? Why is metallic bonding important? Why do metals tarnish? Why is copper used for most electrical wiring? What are some factors that contribute to building a characteristic resonant tone in percussion? How does the type of wire affect resistance in a wire?
Only when a potential causes a drift in a particular direction can a current be said to flow.What is resistance Resistance is the hindrance to the flow of electrons in material. While a potential difference across the conductor encourages the flow of electrons, resistance discourages it. The ...