题目3单选题
两互感线圈同侧相并时,其等效电感量L同 =( )A. <img src="https://tihai-oss-cloud.itihey.com/img/7b6b78316ab0bfbf3a96f4acb296df93.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/378b8b41f58658eaa231bc860394e8c4.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/427af05d6287323ae127eb6ef4f04bb8.png">