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

AI Thread Summary
Measuring 2000 amps with a conventional series meter is challenging due to the significant heat generated by even minimal resistance in the circuit. The heat produced is a result of the power dissipation, which can be calculated using the equation P=I²R. As current increases, the heat generated becomes proportional to the square of the current, leading to potential overheating and damage to the meter. This highlights the difficulties in accurately measuring high currents without specialized equipment. Understanding the relationship between power, current, and resistance is crucial for addressing this issue.
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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?
 
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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.
 

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