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21. From the energy conservation point of view, the input power of the first transformer must be equal to the output power of the second transformer. ( Assume transformers are ideal and don't heat up.) If the current in the final output terminal is 2.00 A, what is the current input for 17,000 V? a. 0.01 A b. 0.4 A c. 0.04 A d. 0.02 A e. none of these

21. From the energy conservation point of view, the input power of the first transformer must be equal to the output power of the second transformer. ( Assume transformers are ideal and don't heat up.) If the current in the final output terminal is 2.00 A, what is the current input for 17,000 V? a. 0.01 A b. 0.4 A c. 0.04 A d. 0.02 A e. none of these

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question 21

**Educational Content: Electric Transformers and Magnetic Fields** **Problem 21: Transformer Input Current Calculation** _Diagram Description:_ The diagram shows two transformers. The primary transformer is labeled with an input voltage of 17,000 V. The secondary transformer's output is marked as 2.00 A. The question mark indicates the unknown voltage in the second transformer. **Question:** From the energy conservation point of view, the input power of the first transformer must be equal to the output power of the second transformer. (Assume transformers are ideal and do not heat up.) If the current in the final output terminal is 2.00 A, what is the current input for 17,000 V? **Options:** a. 0.01 A b. 0.4 A c. 0.04 A d. 0.02 A e. none of these --- **Problem 22: Magnetic Field in a Wire** _Diagram Description:_ The diagram shows a very thick cylindrical wire with radius \( R = 5.0 \, \text{cm} \). There is a uniform current of 20 A flowing through the cross section of the wire. An arrow indicates the direction of the current flow. **Question:** A very thick wire with radius 5.0 cm has a uniform current of 20 A flowing through the cross section. Use Ampere’s Law to find the magnetic field 3.0 cm away from the center of the wire. **Options:** a. 48 μT b. 24 μT c. 80 μT d. 133 μT e. none of these
Transcribed Image Text:**Educational Content: Electric Transformers and Magnetic Fields** **Problem 21: Transformer Input Current Calculation** _Diagram Description:_ The diagram shows two transformers. The primary transformer is labeled with an input voltage of 17,000 V. The secondary transformer's output is marked as 2.00 A. The question mark indicates the unknown voltage in the second transformer. **Question:** From the energy conservation point of view, the input power of the first transformer must be equal to the output power of the second transformer. (Assume transformers are ideal and do not heat up.) If the current in the final output terminal is 2.00 A, what is the current input for 17,000 V? **Options:** a. 0.01 A b. 0.4 A c. 0.04 A d. 0.02 A e. none of these --- **Problem 22: Magnetic Field in a Wire** _Diagram Description:_ The diagram shows a very thick cylindrical wire with radius \( R = 5.0 \, \text{cm} \). There is a uniform current of 20 A flowing through the cross section of the wire. An arrow indicates the direction of the current flow. **Question:** A very thick wire with radius 5.0 cm has a uniform current of 20 A flowing through the cross section. Use Ampere’s Law to find the magnetic field 3.0 cm away from the center of the wire. **Options:** a. 48 μT b. 24 μT c. 80 μT d. 133 μT e. none of these
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