电磁感应中的能量问题（Energy problems in electromagnetic induction）.docVIP

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电磁感应中的能量问题（Energy problems in electromagnetic induction）.doc

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电磁感应中的能量问题（Energy problems in electromagnetic induction） Energy problems in electromagnetic induction Review The process of generating and maintaining the induced current is the process by which other forms of energy are converted to inductive currents. The conductor before reaching a steady state, the force moving conductor work, a part of consumption to overcome the work of Ampere force, into the induced current electrical energy or finally into Joule heat, the other part is used to increase the kinetic energy of the conductor. When a conductor reaches a steady state (at constant motion), the work done by an external force is completely consumed by the power to overcome the power of the ampere and then convert it into the electric energy of the induced current or, finally, into Joule heat 2. in the electromagnetic induction phenomenon, energy is conserved. Lenzs law and the law of conservation of energy is consistent with the careful analysis of electromagnetic induction in the process of energy conversion, skilled application of the transformation and conservation of energy is a simple and commonly used method of electromagnetic induction is complex problem solving. 3. ampere force does positive work and overcome the difference between the work of Ampere force: the process of electromagnetic induction, and at the same time, along with the transformation and conservation of energy, when the external force to overcome the work of Ampere force, there are other forms of energy into electrical energy; when the ampere force does positive work, there is electricity into it forms of energy. 4., the problem of ear heat is often involved in the more complex electromagnetic induction phenomena. Especially the change of Ampere force, not directly from the Q=I2 Rt solution, with the method of energy conservation can be held without specific details of force and variable current work, only need to understand the energy transformation way, pay attention to distinguish how many