Question: What is the standard way to measure a current of about 10,000 A? DC clamp meters seem to have only scales up to 2,000 A.

**Edit**

Some background of this question: 

I am a high school physics teacher and I am trying to improve some classical experiments using high currents from ultra-capacitor discharge. 

In particular I am looking for a good way to measure the discharge current of a ultra capacitor for very short times like in this "jumping ring" experiment:

[A safe and effective modification of Thomson’s jumping ring experiment](http://www.rose-hulman.edu/~moloney/Ph425/0143-0807_33_6_1625JumpingRing.pdf)

The second motivation for this question was just because I just want to know it out of curiosity for my background knowledge of what is the usual way to measure such high currents today.

Answer: 
You can get shunts at that current level. Here is one product series from one company. They have other models and there are other suppliers.

**[Series G Shunts](http://www.cshunt.com/pdf/g.pdf)**
Cap discharge starting below 50V and making 10kA? 

It is worth calculating what |Z| has to be to pull that off.... I make it no more then \$5 \cdot 10^{-3} \Omega\$, and if much of that is inductive then the value will need to be even lower as the inductance will limit the rate of rise. 

Usually the starting point for fast high current pulses is a couple of order of magnitude more voltage on the cap bank and a pulse forming network. 

I would second the rogowski suggestion, they are fast enough to see the action, and impose minimal burden.

This is a pulse application so \$I^2R\$ losses do not impose much on cable size, but geometry is going to matter for inductance control, think wide copper foil separated by thin insulation to minimise loop areas, note that there will be lots of mechanical forces induced by the magnetic fields between the conductors. 

Keep the energy relatively small (Bigger caps do NOT help much because they beget self inductance) and small energy level == safe energy levels. 

I don't think you are easily going to supply 10kA from a 50V cap bank, but I await word of the attempt attempt with interest.