Which of the following statements is true for a solenoid?
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A.
A solenoid is commonly used to obtain a uniform magnetic field.
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B.
A solenoid is commonly used to obtain a non-uniform magnetic field.
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C.
A solenoid is commonly used to obtain a non-uniform electric field.
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D.
A solenoid is commonly used to obtain a uniform electric field.
Correct Answer:
A. A solenoid is commonly used to obtain a uniform magnetic field.
Explanation:
A solenoid consists of a coil of wire wound into a tightly packed helix. When an electric current passes through it, it generates a magnetic field that is nearly uniform and parallel to the axis inside the coil. This property makes solenoids highly effective for applications requiring a consistent and controllable magnetic environment, such as in electromagnets or various electronic components. Unlike electric fields which are produced by static charges, the solenoid's function is specifically centered on producing a steady magnetic field. Therefore, the statement that a solenoid is commonly used to obtain a uniform magnetic field is correct.
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