Why is it difficult to measure 2000 amps with a series meter?

[Masafi]

Suggest a reason why it is difficult to measure a large current (2000 amps) with a conventional meter in series in the circuit.

The answer is:

Even a very small resistance (in series) with 2000 A through it would generate much heat

Why is this? How do we get this conclusion? From R=V/I? So is the heat produced proprotional to pd?

 

[Redbelly98]

This is a question about the heat or power in a circuit. Look in your textbook or class notes for an equation that relates power P, current, and resistance.