4. Three resistors, 60.0 N, 30.0 N, and 20.0 N, are connected in parallel across a 90.0-V battery. a. Find the current through each branch of the circuit. b. Find the equivalent resistance of the circuit. 90.0 V. c. Find the current through the battery. 60.0 0 30.0 n 20.0 0

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**Parallel Circuit with Three Resistors**

**Problem:**

Three resistors, 60.0 Ω, 30.0 Ω, and 20.0 Ω, are connected in parallel across a 90.0 V battery.

**Tasks:**

a. Find the current through each branch of the circuit.

b. Find the equivalent resistance of the circuit.

c. Find the current through the battery.

**Diagram Explanation:**

The diagram shows a parallel circuit with three resistors. A 90.0 V battery is connected to three parallel branches, each containing a resistor and an ammeter. The resistors have values of 60.0 Ω, 30.0 Ω, and 20.0 Ω, respectively. The current through each resistor is labeled as \(I_a\), \(I_b\), and \(I_c\).

**Solution:**

To find the current through each branch, use Ohm's Law (\(I = \frac{V}{R}\)).

1. For the 60.0 Ω resistor:
   \[
   I_a = \frac{90.0 \, \text{V}}{60.0 \, \Omega} = 1.5 \, \text{A}
   \]

2. For the 30.0 Ω resistor:
   \[
   I_b = \frac{90.0 \, \text{V}}{30.0 \, \Omega} = 3.0 \, \text{A}
   \]

3. For the 20.0 Ω resistor:
   \[
   I_c = \frac{90.0 \, \text{V}}{20.0 \, \Omega} = 4.5 \, \text{A}
   \]

To find the equivalent resistance (\(R_{\text{eq}}\)) of the parallel circuit:

\[
\frac{1}{R_{\text{eq}}} = \frac{1}{60.0} + \frac{1}{30.0} + \frac{1}{20.0}
\]

\[
\frac{1}{R_{\text{eq}}} = \frac{1}{60} + \frac{1}{30} + \frac{1}{20}
\]

\[
\frac{1}{R_{\text{eq}}} = \frac{1 + 2 + 3}{60
Transcribed Image Text:**Parallel Circuit with Three Resistors** **Problem:** Three resistors, 60.0 Ω, 30.0 Ω, and 20.0 Ω, are connected in parallel across a 90.0 V battery. **Tasks:** a. Find the current through each branch of the circuit. b. Find the equivalent resistance of the circuit. c. Find the current through the battery. **Diagram Explanation:** The diagram shows a parallel circuit with three resistors. A 90.0 V battery is connected to three parallel branches, each containing a resistor and an ammeter. The resistors have values of 60.0 Ω, 30.0 Ω, and 20.0 Ω, respectively. The current through each resistor is labeled as \(I_a\), \(I_b\), and \(I_c\). **Solution:** To find the current through each branch, use Ohm's Law (\(I = \frac{V}{R}\)). 1. For the 60.0 Ω resistor: \[ I_a = \frac{90.0 \, \text{V}}{60.0 \, \Omega} = 1.5 \, \text{A} \] 2. For the 30.0 Ω resistor: \[ I_b = \frac{90.0 \, \text{V}}{30.0 \, \Omega} = 3.0 \, \text{A} \] 3. For the 20.0 Ω resistor: \[ I_c = \frac{90.0 \, \text{V}}{20.0 \, \Omega} = 4.5 \, \text{A} \] To find the equivalent resistance (\(R_{\text{eq}}\)) of the parallel circuit: \[ \frac{1}{R_{\text{eq}}} = \frac{1}{60.0} + \frac{1}{30.0} + \frac{1}{20.0} \] \[ \frac{1}{R_{\text{eq}}} = \frac{1}{60} + \frac{1}{30} + \frac{1}{20} \] \[ \frac{1}{R_{\text{eq}}} = \frac{1 + 2 + 3}{60
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