In STEP 6 you added D2 and R4 to the circuit, parallel to B1. Which answer best describes the effect of that change? O D2 lights up continually, regardless of whether the switch is open or closed, because the connection bypasses B1, which is still controlled by the transistor and switch. O Since the added path is parallel to B1, the two paths divide the current that originally flowed only through B1. The total current through the transistor remains unchanged. O The buzzer, LED, and transistor all together in the circuit use more current than the PSB can deliver. This reduces the current to each, so additional resistors are not required. O The parallel connection decreases the total resistance in the circuit. This increases the total current through the circuit, all of which must pass through the collector and emitter of the transistor, because the transistor controls the flow of current through both paths.

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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In STEP 6 you added D2 and R4 to the circuit, parallel to B1. Which answer best describes the effect of that change?
O D2 lights up continually, regardless of whether the switch is open or closed, because the connection bypasses B1, which is still controlled by the
transistor and switch.
O Since the added path is parallel to B1, the two paths divide the current that originally flowed only through B1. The total current through the transistor
remains unchanged.
O The buzzer, LED, and transistor all together in the circuit use more current than the PSB can deliver. This reduces the current to each, so additional
resistors are ot required.
O The parallel connection decreases the total resistance in the circuit. This increases the total current through the circuit, all of which must pass through
the collector and emitter of the transistor, because the transistor controls the flow of current through both paths.
Transcribed Image Text:In STEP 6 you added D2 and R4 to the circuit, parallel to B1. Which answer best describes the effect of that change? O D2 lights up continually, regardless of whether the switch is open or closed, because the connection bypasses B1, which is still controlled by the transistor and switch. O Since the added path is parallel to B1, the two paths divide the current that originally flowed only through B1. The total current through the transistor remains unchanged. O The buzzer, LED, and transistor all together in the circuit use more current than the PSB can deliver. This reduces the current to each, so additional resistors are ot required. O The parallel connection decreases the total resistance in the circuit. This increases the total current through the circuit, all of which must pass through the collector and emitter of the transistor, because the transistor controls the flow of current through both paths.
D2
Red
B1
LDR1
PSB (+
R4
5 V
5.1 kQ
Q1
2N2222
R3
5.1 kQ
Transcribed Image Text:D2 Red B1 LDR1 PSB (+ R4 5 V 5.1 kQ Q1 2N2222 R3 5.1 kQ
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