Question

To cut 1/4" (6 mm) thick mild steel at a rate of 40 inches per minute, what should the current be set to, approximately? Use the values presented in:

A) The question does not provide enough information to determine the current setting.
B) 40 amps
C) 1/4 amp
D) 6 mm amps
E) 10 amps

Answer 1

To cut 1/4" (6 mm) thick mild steel at a rate of 40 inches per minute, the current setting should be approximately 10 amps.

Step-by-step explanation:

To cut 1/4" (6 mm) thick mild steel at a rate of 40 inches per minute, the current setting should be approximately 10 amps.

This information can be derived from the example provided (Example 20.3) which shows how to calculate the current flowing in a wire given its diameter and drift velocity.

Since the diameter of the wire in this example is not given, we cannot determine the current setting precisely, so the answer is option A) The question does not provide enough information to determine the current setting.