If the bar magnet is simply held stationary near the coil, no current is indicated.

如果磁棒单纯静止在线圈附近，就检测不到电流。

youdao

If the bar magnet is simply held stationary near the coil, no current is indicated.

如果磁棒单纯静止在线圈附近，就检测不到电流。

youdao