Explanation:
A Shunt is a passive element, usually resistive, that is used to bypass current around another element, like a meter, that is not able to handle the full current flow.
The voltage equivalent of this is the voltage Divider, once again usually resistive, which is used to block excessive voltage from an element that is not able to withstand the whole voltage.
A Multiplier is an active element that amplifies a voltage or current to enable a less sensitive device or circuit to make use of it.
