Reading Quiz #11) What is true about electric charges?

a) Unlike charges repelb) Unlike charges attractc) Like charges attractd) Two of the above

2) Is electric charge conserved? a) Yes b) No c) If no magnetic fields are present

3) Which is a true statement about Coulomb’s law? a) Electrostatic force falls off like distance squaredb) The force between two charges is inversely

proportional to the amount of chargec) None of the above

Reading Quiz #21) What characterizes the electric field?

a) It is the associated with a charge or a charge configurationb) It depends on the charge of the test particle probing itc) Its direction and strength both depend on the position of the

probe charge d) Two of the above

2) The electric field lines associated with a negative charge..? a) Point radially outward from the chargeb) Point radially inward toward the chargec) Point radially, but direction depends on sign of probe charge d) Go anti-clockwise around the charge

3) … charge(s) at a distance constitute an electric dipole?a) Two positive b) Two negative c) A positive and a negative

Reading Quiz #3

1) The amount of electric flux depends ona) Strength of the electric fieldb) Angle between surface pierced by field lines and electric fieldc) The area of the surfaced) All of the abovee) Two of the above

2) Gauss’s Law is a relation between …a) … area and electric flux

b) …charge and electric fluxc) …area and electrostatic forced) …electric potential and charge

Reading Quiz #41) Which of the following statements is NOT true? The

electric potential …a. has units of Volts.

b. is the electrical potential energy per unit charge.

c. is a vector like the electric field.

d. obeys the Principle of Superposition.

2) The product of a charge q with a potential difference Vab

is equal to …a. the (minimum) work done in moving the charge from a to b.

b. the change in the charge’s potential energy between a and b.

c. Both of the above are true.

d. Neither of the above is true.

Reading Quiz #5

1) Equipotential lines …a) … are lines of equal electric fieldb) … are perpendicular to the electric fieldc) Both of the aboved) None of the above

2) The electric field in one dimension…a) … is the integral over the potential b) … is the integral over the potential energyc) … is the derivative of the potentiald) … is the derivative of the potential energy

Reading Quiz #6

1) The charge stored in a capacitor is proportional toa) … its capacitance

b) … its resistance

c) … the voltage across the capacitor plates

d) Two of the above

e) All of the above

2) What is the equivalent capacitance of a series of capacitors?

a) sum of the individual capacitances

b) inverse of the sum of the inverse capacitances

Reading Quiz #71) The amount of electric energy stored on a

capacitor …?a) grows with voltage and chargeb) grows with voltage, declines with chargec) declines with voltage and charged) none of above

2) Material between the plates of a capacitor is a …a) Dialectic b) Dielectric c) Dialectric d) Bimetal

3)What is the effect of material between cap. plates?a) Increases capacitance b) Decreases capacitancec) No effect on capacitance, but on charge on plates

Reading Quiz #81) Electric current is …?

a) The rate change of electric potential per timeb) Amount of charge passing a point (in a wire) per timec) Rate change of charge per unit aread) Two of the above

2) Which term was NOT defined in the reading assignment?a. Resistivity.b. Current.c. Conductivity.d. Impedance.

3) Which is a form of Ohm’s law?a) R=V/Ib) C=Q/Vc) V=I/Rd) Q=CU