To increase the current density in a wire of length and diameter D, you can
a. decrease the potential difference between the two ends of the wire.
b. increase the potential difference between the two ends of the wire.
c. decrease the magnitude of the electric field in the wire.
d. heat the wire to a higher temperature.
e. combine both (b) and (d).
b
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the energy stored in the capacitor
A. quadruples. B. doubles. C. remains the same. D. is reduced by a factor of two. E. is reduced by a factor of four. F. some other result (specify).
An object's weight would be different on Earth and on the Moon. Which of the following would also be different?
a. Mass density b. Mass c. Length d. Volume e. None of these
A natural agent of chemical weathering that is enhanced by CO2 pollution is ______________
Fill in the blank(s) with correct word
The positively charged particle inside an atom is the
a. electron b. proton c. neutron d. nucleus e. none of the above