Science 30 January 2000 Diploma Examination
Science 30 January 2000 Diploma Examination
Science 30 January 2000 Diploma Examination
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Use the following information to answer the next three questions.<br />
Circuit for Trilight Lamp<br />
120 Ω<br />
Switch I<br />
240 Ω<br />
Switch II<br />
110 V<br />
The control switch on a trilight lamp can control three different light<br />
intensities (high, medium, and low), depending on the combination of<br />
switches activated.<br />
28. When switches I and II are closed, the total resistance in the above circuit is<br />
A. 0.0125 Ω<br />
B. 3.00 Ω<br />
C. 80.0 Ω<br />
D. 360 Ω<br />
29. The switch combination that will draw the largest current is<br />
A. I open, II open<br />
B. I open, II closed<br />
C. I closed, II open<br />
D. I closed, II closed<br />
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