What happens to the magnitude of the magnetic field inside a long solenoid if the number of turns is doubled, with the length remaining the same?
1.It becomes four times larger.
2.It becomes twice as large.
3.It is unchanged.
4.It becomes one-half as large.
5.It becomes one-fourth as large.
2
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What were the major reasons for the great increase in size of the typical power plant as seen in Fig. 8.10?
What will be an ideal response?
In a single-slit diffraction experiment, the width of the slit is 1.90 ?m. If a beam of light of wavelength 610 nm forms a diffraction pattern, what is the angle associated with the second dark fringe above the central bright fringe?
A) 11.4° B) 9.35° C) 12.2° D) 39.9° E) 18.7°
Which of the following statements about our Sun is not true?
A) The Sun contains more than 99% of all the mass in our solar system. B) The Sun is a star. C) The Sun's diameter is about 5 times that of Earth. D) The Sun is made mostly of hydrogen and helium.
When two or more capacitors are connected in parallel across a potential difference,
A) the potential difference across each capacitor is the same. B) each capacitor carries the same amount of charge. C) the equivalent capacitance of the combination is less than the capacitance of any of the capacitors. D) All of the above choices are correct. E) None of the above choices are correct.