题目10单选题
当以正向扩散电流为主时,PN结的IV特性在<img src="https://tihai-oss-cloud.itihey.com/img/f13e5d5c83aa04444d993c8e4c45f1be.png">系统中的斜率为( )A. <img src="https://tihai-oss-cloud.itihey.com/img/725419b7363f184d89fdb288e8cb163f.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/bb774fdb66c9df3f1fcaea6bc078adbf.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/9e0752874d149086034936e00db3fd1e.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/3989027d676557ed4b73aa10491bcd13.png">