Name: Lab Partners:
Date:
Homework Assignment
Batteries, Bulbs and Current
Question 1 Is there any difference between the static charges generated by rubbing a
glass rod with silk or a rubber rod with cat fur and the charges which flow (from a
battery) through wires in an electric circuit? Give evidence for your answer.
Question 2 For the circuit pictured on the right, indicate whether the statements
below are TRUE or FALSE. If a statement is
TRUE, briefly describe the evidence from this lab
that supports this statement. If a statement is
FALSE, give a correct statement, and briefly de-
scribe the evidence from this lab that supports this
new statement.
x
y
a. The current is from the battery, through wire x, through the bulb and then back to
the battery through wire y.
b. Since current is used up by the bulb, the current in wire y is smaller than the
current in wire x.
c. The current is toward the bulb in both wires x and y.
d. If wire y is disconnected, but wire x is left connected, the bulb will still light, but
if wire x is disconnected and wire y is left connected, the bulb will not light.
e. A current probe will read the same magnitude if connected to measure the current
PHYS-204: Physics II Laboratory 1
