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Because the circuit current runs through it, an ammeter usually carries built-in protection in the form of a:

AFuse
BFilter
CLens
DLever
Answer & Solution
Correct answer: A. Fuse
1. Excess current would damage it. 2. The protection breaks the path. 3. It is a fuse. _Source: OpenStax University Physics Volume 2, Chapter 10, Direct-Current Circuits._
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