## PHYS345 Electricity and Electronics

**Hint for P2.4**
a. Simple application of Ohm's law.

b. Voltage across the resistor is *purportedly* unchanged from part a.
*(Can this really be the case?)*
What is the new current?

c. Now current is unchanged from part a, but the voltage across the resistor is lower.
*(Can the specifications of this problem be true either?)*

"http://www.physics.udel.edu/~watson/phys345/protected/exercises/hints/P2-4.html"

Last updated Oct. 4, 1998.

Copyright George Watson, Univ. of Delaware, 1998.