Identify whether the following circuits are open or closed.

Classify the following curves as open or closed.

Classify the following curves as open or closed.

Classify the following curves as open or closed.

Classify the following curves as open or closed.

Classify the following curves as open or closed:

Classify the following curves as Open or Closed:

Find whether the following sentences are true or false. In a circuit if the key is in open (off)condition, then electricity well not flow.

Classify the following as open or closed curves:

Which of the following curves are closed or open?