Math Problem Statement

solve this parallel circut question

Determine the current flowing through R2, given: R1 = 10 Ω, R2 = 11 Ω, and I1 = 7 A

Solution

This problem is about a parallel circuit where two resistors, R1R_1 and R2R_2, are connected in parallel, and the current I1=7AI_1 = 7 \, \text{A} is flowing through the branch containing R1R_1.

Given:

  • R1=10ΩR_1 = 10 \, \Omega
  • R2=11ΩR_2 = 11 \, \Omega
  • I1=7AI_1 = 7 \, \text{A}

To determine the current through R2R_2, we can use Ohm's law and the fact that the voltage across both resistors in parallel is the same.

Step 1: Calculate the voltage across R1R_1

Using Ohm's law: V=I1×R1V = I_1 \times R_1 V=7A×10Ω=70VV = 7 \, \text{A} \times 10 \, \Omega = 70 \, \text{V} Since the resistors are in parallel, the voltage across R2R_2 is also 70 V.

Step 2: Calculate the current through R2R_2

Using Ohm's law for R2R_2: I2=VR2I_2 = \frac{V}{R_2} I2=70V11Ω6.4AI_2 = \frac{70 \, \text{V}}{11 \, \Omega} \approx 6.4 \, \text{A}

Thus, the current flowing through R2R_2 is approximately 6.4A\boxed{6.4 \, \text{A}}.

Would you like more details on how to approach such problems or have any questions? Here are some related questions you can explore:

  1. How is the total current in the circuit calculated in a parallel circuit?
  2. What happens to the current distribution if the resistances are unequal in a parallel circuit?
  3. How does the total resistance of a parallel circuit compare to individual resistances?
  4. What would happen to the currents if we change the value of one resistor?
  5. How can we calculate the total power consumed in this circuit?

Tip: In a parallel circuit, the voltage across each branch is the same, while the current divides based on the resistances of each branch.

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Math Problem Analysis

Mathematical Concepts

Ohm's Law
Parallel Circuits
Current Division

Formulas

V = I * R
I = V / R

Theorems

Ohm's Law

Suitable Grade Level

Grade 10-12