Question

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21
look at the circuit diagram. how many switches does the diagram show?
one
two
three
four

Explanation:

To determine the number of switches, we examine the circuit diagram. Switches are represented by pairs of small circles (contacts). Looking at the diagram, we can identify two sets of these switch contacts: one set on the left - hand part of the circuit and another set on the right - hand part. So, by counting these distinct switch - like structures, we find that there are two switches.

Answer:

B. two