What happens to the magnitude of the charge on each plate of a capacitor if the potential difference between the conductors is doubled?
1.It becomes four times larger.
2.It becomes two times larger.
3.It is unchanged.
4.It becomes one-half as large.
5.It becomes one-fourth as large.
2
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Faraday's Law: At a certain instant, coil A is in a 10-T external magnetic field and coil B is in a 1-T external magnetic field. Both coils have the same area and are oriented at right angles to the field. Which coil will have a greater emf induced in it?
A. coil A B. coil B C. It is impossible to know without more information about the fields.
What is the origin of the nitrogen in Titan's atmosphere?
A) gas captured from the solar nebula B) breakdown of ammonia (NH3 ) by ultraviolet light from the Sun C) outgassing from Titan's interior D) impacts from comets
Which of the following will increase the capacitance of a parallel-plate capacitor? (There could be more than one correct choice.)
A) a decrease in the plate area and an increase in the plate separation B) a decrease in the potential difference between the plates C) an increase in the potential difference between the plates D) an increase in the plate area and a decrease in the plate separation E) an increase in the charge on the plates
(a) At what Celsius temperature is the average kinetic energy of a helium gas atom equal to 6.21 × 10-21 J? The Boltzmann constant is 1.38 × 10-23 J/K
(b) What would be the temperature for radon gas? What will be an ideal response?