2. A uniform magnetic field B is perpendicular to the plane of a circular loop of diameter 10 cm formed from wire of diameter 2.5 nm and resisistivity 1.69 × 10-8 N · m. At what rate must the magnitude of B change to induce a 10 A current in the loop? (See problem 8, chapter 30 in Fundamentals of Physics)

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**Educational Content: Magnetic Fields and Induced Current**

**Problem 2:**  
A uniform magnetic field \( \mathbf{B} \) is perpendicular to the plane of a circular loop with a diameter of 10 cm. This loop is formed from a wire with a diameter of 2.5 mm and a resistivity of \( 1.69 \times 10^{-8} \,\Omega \cdot \text{m} \). Determine the rate at which the magnitude of \( \mathbf{B} \) must change to induce a current of 10 A in the loop.

**Given:**
- Diameter of the circular loop (\(D_{\text{loop}}\)): 10 cm.
- Diameter of the wire (\(D_{\text{wire}}\)): 2.5 mm.
- Resistivity of the wire (\(\rho\)): \(1.69 \times 10^{-8} \,\Omega \cdot \text{m}\).
- Desired induced current (\(I\)): 10 A.

**Objective:**
Calculate the rate of change of the magnetic field (\(\frac{dB}{dt}\)) required to induce the specified current in the loop.

**Reference:**
For further information and context, refer to problem 8, chapter 30 in "Fundamentals of Physics."

Note: This problem involves the application of Faraday's law of induction and Ohm's law to compute the required rate of change of the magnetic field. Students are encouraged to review the relevant concepts and equations in their textbook.
Transcribed Image Text:**Educational Content: Magnetic Fields and Induced Current** **Problem 2:** A uniform magnetic field \( \mathbf{B} \) is perpendicular to the plane of a circular loop with a diameter of 10 cm. This loop is formed from a wire with a diameter of 2.5 mm and a resistivity of \( 1.69 \times 10^{-8} \,\Omega \cdot \text{m} \). Determine the rate at which the magnitude of \( \mathbf{B} \) must change to induce a current of 10 A in the loop. **Given:** - Diameter of the circular loop (\(D_{\text{loop}}\)): 10 cm. - Diameter of the wire (\(D_{\text{wire}}\)): 2.5 mm. - Resistivity of the wire (\(\rho\)): \(1.69 \times 10^{-8} \,\Omega \cdot \text{m}\). - Desired induced current (\(I\)): 10 A. **Objective:** Calculate the rate of change of the magnetic field (\(\frac{dB}{dt}\)) required to induce the specified current in the loop. **Reference:** For further information and context, refer to problem 8, chapter 30 in "Fundamentals of Physics." Note: This problem involves the application of Faraday's law of induction and Ohm's law to compute the required rate of change of the magnetic field. Students are encouraged to review the relevant concepts and equations in their textbook.
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