Consider the following figure. B 15 = 1 ohm www 2 ohms C amps amps amps amps amps amps E A 2 ohms 1 ohm 14 volts i (a) Find the currents I, I₁,..., I5 in the bridge circuit in the figure. I = 1₁ = 1₂ = 13 = 1 ohm D (b) Find the effective resistance of this network. X ohms (c) Can you change the resistance in branch BC (but leave everything else unchanged) so that the current through branch CE becomes 0? Yes O No

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# Understanding Bridge Circuits: An Educational Overview

## Bridge Circuit Analysis

Consider the following figure of a bridge circuit:

### Diagram Description:

The diagram illustrates a bridge circuit composed of certain resistors connected in a specific configuration. Here is the detailed breakdown of the arrangement:

- **Resistors:**
  - **1 ohm** between points C and A.
  - **2 ohms** between points C and D.
  - **1 ohm** between points C and E.
  - **2 ohms** between points B and E.
  - **1 ohm** between points D and E.

- **Points:**
  - **A, B, C, D, and E** are different points in the circuit.
  
- **Voltage Source:**
  - A 14V voltage source is connected between points A and B.
  
- **Currents:**
  - **I**: Total current provided by the voltage source.
  - **I1, I2, I3, I4, I5**: Currents flowing through different branches of the circuit (as shown by the arrows).

### Questions and Calculations:

#### (a) Find the currents \( I, I_1, \ldots, I_5 \) in the bridge circuit in the figure.

**Solution Fields:**
- \( I = \) __ amps
- \( I_1 = \) __ amps
- \( I_2 = \) __ amps
- \( I_3 = \) __ amps
- \( I_4 = \) __ amps
- \( I_5 = \) __ amps

#### (b) Find the effective resistance of this network.

**Solution Field:**
- __ ohms

#### (c) Can you change the resistance in branch BC (but leave everything else unchanged) so that the current through branch CE becomes 0?

**Options:**
- [ ] Yes
- [ ] No

### Detailed Explanation:

**Bridge Circuit**: A bridge circuit is used to measure unknown resistances and consists of four resistances in a diamond shape with a voltage source connected across one diagonal and the measurement taken from the other diagonal. 

To solve for currents and the effective resistance, you'll apply Kirchhoff's laws:
- **Kirchhoff's Voltage Law (KVL):** The sum of all voltages around any closed loop in a circuit must equal zero.
- **Kirchhoff
Transcribed Image Text:# Understanding Bridge Circuits: An Educational Overview ## Bridge Circuit Analysis Consider the following figure of a bridge circuit: ### Diagram Description: The diagram illustrates a bridge circuit composed of certain resistors connected in a specific configuration. Here is the detailed breakdown of the arrangement: - **Resistors:** - **1 ohm** between points C and A. - **2 ohms** between points C and D. - **1 ohm** between points C and E. - **2 ohms** between points B and E. - **1 ohm** between points D and E. - **Points:** - **A, B, C, D, and E** are different points in the circuit. - **Voltage Source:** - A 14V voltage source is connected between points A and B. - **Currents:** - **I**: Total current provided by the voltage source. - **I1, I2, I3, I4, I5**: Currents flowing through different branches of the circuit (as shown by the arrows). ### Questions and Calculations: #### (a) Find the currents \( I, I_1, \ldots, I_5 \) in the bridge circuit in the figure. **Solution Fields:** - \( I = \) __ amps - \( I_1 = \) __ amps - \( I_2 = \) __ amps - \( I_3 = \) __ amps - \( I_4 = \) __ amps - \( I_5 = \) __ amps #### (b) Find the effective resistance of this network. **Solution Field:** - __ ohms #### (c) Can you change the resistance in branch BC (but leave everything else unchanged) so that the current through branch CE becomes 0? **Options:** - [ ] Yes - [ ] No ### Detailed Explanation: **Bridge Circuit**: A bridge circuit is used to measure unknown resistances and consists of four resistances in a diamond shape with a voltage source connected across one diagonal and the measurement taken from the other diagonal. To solve for currents and the effective resistance, you'll apply Kirchhoff's laws: - **Kirchhoff's Voltage Law (KVL):** The sum of all voltages around any closed loop in a circuit must equal zero. - **Kirchhoff
**Problem Statement:**

Consider the following figure:

*Diagram Description:*
The circuit diagram is a bridge network with the following resistances:
- Between A and B: 2 ohms.
- Between A and D: 1 ohm.
- Between C and E: 1 ohm.
- Between B and C: 1 ohm.
- Between D and E: 1 ohm.
- Between D and C: 2 ohms.

Markings on the circuit indicate the following currents:
- \( I \) is moving upwards from point E between A and B.
- \( I_1 \) is moving upwards from point A between A and B.
- \( I_2 \) is moving downwards from point C between D and B.
- \( I_3 \) is moving rightwards from point E towards point C.
- \( I_4 \) is moving leftwards from point D towards point B.
- \( I_5 \) is moving leftwards from point B towards point E.
- \( 14 \) volts is applied across A to B and B to D.

(a) Find the currents \( I, I_1, \ldots, I_5 \) in the bridge circuit in the figure.

\[
\begin{align*}
I & = \text{amps} \\
I_1 & = \text{amps} \\
I_2 & = \text{amps} \\
I_3 & = \text{amps} \\
I_4 & = \text{amps} \\
I_5 & = \text{amps}
\end{align*}
\]

(b) Find the effective resistance of this network.

\[
\text{Effective Resistance} = \text{ohms}
\]

(c) Can you change the resistance in branch \( BC \) (but leave everything else unchanged) so that the current through branch \( CE \) becomes 0?

\[
\text{Choices:}
\begin{itemize}
\item Yes
\item No
\end{itemize}
\]
Transcribed Image Text:**Problem Statement:** Consider the following figure: *Diagram Description:* The circuit diagram is a bridge network with the following resistances: - Between A and B: 2 ohms. - Between A and D: 1 ohm. - Between C and E: 1 ohm. - Between B and C: 1 ohm. - Between D and E: 1 ohm. - Between D and C: 2 ohms. Markings on the circuit indicate the following currents: - \( I \) is moving upwards from point E between A and B. - \( I_1 \) is moving upwards from point A between A and B. - \( I_2 \) is moving downwards from point C between D and B. - \( I_3 \) is moving rightwards from point E towards point C. - \( I_4 \) is moving leftwards from point D towards point B. - \( I_5 \) is moving leftwards from point B towards point E. - \( 14 \) volts is applied across A to B and B to D. (a) Find the currents \( I, I_1, \ldots, I_5 \) in the bridge circuit in the figure. \[ \begin{align*} I & = \text{amps} \\ I_1 & = \text{amps} \\ I_2 & = \text{amps} \\ I_3 & = \text{amps} \\ I_4 & = \text{amps} \\ I_5 & = \text{amps} \end{align*} \] (b) Find the effective resistance of this network. \[ \text{Effective Resistance} = \text{ohms} \] (c) Can you change the resistance in branch \( BC \) (but leave everything else unchanged) so that the current through branch \( CE \) becomes 0? \[ \text{Choices:} \begin{itemize} \item Yes \item No \end{itemize} \]
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