Chapter 29, Problem 52A

a.

To determine

To calculate: Base current.

Answer to Problem 52A

Base current = $\underset{\_}{\text{0 A}}$

Explanation of Solution

Given:

The following figure:

  

The switch shown in the figure is off.

Calculation:

Since the switch is off, it is obvious that no current will flow through the base.

Conclusion:

Base current = $\underset{\_}{\text{0 A}}$

b.

To determine

To calculate: Collector current.

Answer to Problem 52A

Collector current = $\underset{\_}{\text{0 A}}$

Explanation of Solution

Given:

The following figure:

  

The switch shown in the figure is off.

Calculation:

Since the base current is zero, the collector current will also be zero.

Conclusion:

Collector current = $\underset{\_}{\text{0 A}}$

c.

To determine

To calculate: Voltmeter reading.

Answer to Problem 52A

Voltmeter reading = $\underset{\_}{\text{15 V}}$

Explanation of Solution

Given:

The following figure:

  

The switch shown in the figure is off.

Calculation:

Since there is no current flow, there will be no drop across the collector resistor. Hence there will be a voltage drop of $\text{15 V}$ across the transistor.

Conclusion:

Voltmeter reading = $\underset{\_}{\text{15 V}}$