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[题目]有7个外形完全一样的电阻,已知其中6个的阻值相同,另一个的阻值不同.请按照下面提供的器材和操作限制,将那个阻值不同的电阻找出,并指出它的阻值是偏大还是偏小,同时要求画出所用电路图,并对每步判断的根据予以论证.提供的器材:①电池.②一个仅能用来判断电流方向的电流?
[Problem] There are seven identically-shaped resistors, of which six are known to have the same resistance and the other has a different resistance. Please use the equipment and operation restrictions provided below to find out which resistor has a different resistance value. Indicate whether its resistance is too large or too small. At the same time, it is required to draw out the circuit diagrams used, and to demonstrate the basis for each step of judgment. Equipment provided: 1 Battery. 2 A current that can only be used to determine the direction of the current?