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焦耳定律和安全用电的知识,是物理与实际生活联系最密切的部分,最容易与实践活动相联系,因此在中考中体现联系实际、解决实际问题能力的题目多与此部分知识有关,另外,此部分知识还体现在新材料(特别是超导体)的应用上。此部分知识点主要包括以下几个方面:
Joule's law and the knowledge of safe electricity consumption are the most closely related parts of physical and physical life, and are most easily linked with practical activities. Therefore, the problems that can be manifested in the senior high school entrance examinations related to practical ability and practical problems are mostly related to this part of knowledge. This part of knowledge is also reflected in the application of new materials (especially superconductors). This part of the knowledge points mainly include the following aspects: