Consider the following trouble shooting situation. The switch SI in the on position, but the light LI does not come on. The voltage across SI is O. The voltage across LI is 24 volts. The light does not come on bec ause:

Consider the following trouble shooting situation. The switch SI in the on position, but the light LI does not come on. The voltage across SI is O. The voltage across LI is 24 volts. The light does not come on bec ause: