Author Question: A capacitor with very large capacitance is in series with another capacitor with very small ... (Read 78 times)

cool · **on:** Jul 28, 2018

A capacitor with very large capacitance is in series with another capacitor with very small capacitance. What is the equivalent capacitance of the combination?
1.slightly greater than the capacitance of the large capacitor
2.slightly less than the capacitance of the large capacitor
3.slightly greater than the capacitance of the small capacitor
4.slightly less than the capacitance of the small capacitor

Question 2

What kind of a charge can be placed on an electroscope by induction using a glass rod rubbed with silk? Explain.

pallen55 · **Reply #1 on:** Jul 28, 2018

Answer to Question 1

4

Answer to Question 2

A negative charge is placed on an electroscope by induction when a glass rod rubbed
with a silk cloth is used to charge the rod. A glass rod, when rubbed with a silk cloth,
will possess a positive charge. When the positive charged rod is placed near the knob
of the electroscope, electrons will be attracted to the knob. While holding the charged
rod near the knob, touch the knob with your finger. Electrons will flow from your
body to the electroscope. Remove your finger from the electroscope. The electrons
have no conducting path to leave the electroscope. Thus, the electroscope retains an
excess of electrons and a negative charge.