Wei 'an Fortune Teller _ Anhui Fortune Teller WeChat

If the current representation is small, it means that the shunt resistance is too large, so the shunt resistance is too small. As long as the shunt resistance is made slightly larger, then C is right and D is wrong.

If an appropriate small resistor or an appropriate large resistor is connected in parallel with the original shunt resistor, the parallel value will be slightly smaller and the shunt will be slightly larger, so AB is wrong.

So choose: C.