In the circuit from below, switch A is closed, switch B is open and the lamp C is off. Is there any problem? A switch B switch Voltage source (+1) C lamp There is no problem, the lamp C should be off because it is short-circuited by switch A being closed. There is a problem, the lamp C should be on as long as the switch A is closed; either the lamp is burned, or the voltage source is disconnected. There is a problem, the lamp C should be on as long as the switch B is open; most likely the lamp is burned. There is no problem, since the lamp C should be off as long as switch B is open.

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Author:Robert L. Boylestad
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In the circuit from below, switch A is closed, switch B is open and the lamp C is off. Is
there any problem?
A
switch
B
switch
Voltage source
(+1)
C
lamp
There is no problem, the lamp C should be off because it is short-circuited by
switch A being closed.
There is a problem, the lamp C should be on as long as the switch A is closed;
either the lamp is burned, or the voltage source is disconnected.
There is a problem, the lamp C should be on as long as the switch B is open;
most likely the lamp is burned.
There is no problem, since the lamp C should be off as long as switch B is open.
Transcribed Image Text:In the circuit from below, switch A is closed, switch B is open and the lamp C is off. Is there any problem? A switch B switch Voltage source (+1) C lamp There is no problem, the lamp C should be off because it is short-circuited by switch A being closed. There is a problem, the lamp C should be on as long as the switch A is closed; either the lamp is burned, or the voltage source is disconnected. There is a problem, the lamp C should be on as long as the switch B is open; most likely the lamp is burned. There is no problem, since the lamp C should be off as long as switch B is open.
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