The charge on a single electron or proton is:
a. one coulomb.
b. roughly 10^-3 coulomb.
c. tenths of a coulomb.
d. roughly 10^-19 coulomb.
e. roughly 10^-6 coulomb.
d
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In electricity, what quantity is analogous to the "acceleration of gravity" g (which is a force per unit mass)?
A) electric force B) electric field C) electric potential D) electric charge E) an electric dipole
Every cause has an effect and every effect has a cause
a. True b. False Indicate whether the statement is true or false
A capacitor with capacitance C is connected to a battery until charged, then disconnected from the battery. A dielectric having constant ? is inserted in the capacitor. What changes occur in the charge, potential and stored energy of the capacitor after the dielectric is inserted?
1.?V stays same, Q increases, U increases
2.?V stays same, Q decreases, U stays same
3.?V increases, Q decreases, U increases
4.?V decreases, Q stays same, U decreases
5.None of the above
6.Cannot be determined
RLC Circuits: A 120-V rms signal at 60 Hz is applied across a series combination of a 30-mH inductor and a 100-? resistor. What is the rms value of the voltage across the resistor?
A. 120 V B. 60 V C. 100 V D. 150 V E. 0.70 V