A. protect the line
B. open the circuit
C. protect the appliance
D. prevent excessive currents
E. none of the above
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5 Comments
D is the correct answer.
https://studysite.org/Discuss/Question/the_main_function_of_a_fuse_is_to-11220001.htm
https://www.examveda.com/the-main-function-of-a-fuse-is-to-61623/
https://www.quora.com/Why-do-we-use-a-fuse-in-an-electrical-circuit