Direct-Current Circuits13118.52With the switch open, the circuit may be reduced as follows: ±²³±±²³±³´³±²³±²³µ²³±¶²³±µ²³±¶²³±±²³¶²²³±¶²²³±±²³With the switch closed, the circuit reduces as shown below: µ²³±¶²³±±²³¶²³±µ²³±µ³±±²³µ³±±³´³¶·³±²³Since the equivalent resistance with the switch closed is one-half that when the switch is open, we have ()118 50 2RR+Ω=, which yields 14 R=Ω18.53When a generator with emf εand internal resistance rsupplies current I, its terminal voltage is VIr∆=−0 VI. If when
This is the end of the preview. Sign up
access the rest of the document.