Open Question: How to find equivalent resistance when switch is open and closed?

Open Question: How to find equivalent resistance when switch is open and closed?

http://www.webassign.net/cj7/20-p-052-alt.gif

The drawing shows a circuit that contains a battery, two resistors, and a switch. Consider the circuit with R1 = 66.9, R2 = 102.6, and V = 10.0.

(a) What is the equivalent resistance of the circuit when the switch is open and closed?

(b) What is the total power delivered to the resistors when the switch is open and closed?


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