20060131 quiz03 - dc circuits - UGCS

winetediousElectronics - Devices

Oct 7, 2013 (4 years and 1 month ago)

168 views

Ph135b Quiz 03


DC Circuits


1.

At 400 volts, is the dynamic resistance greater or less than at 300 volts for the
non
-
ohmic element of figure 1B? Show calculations or give reasoning to
support your answer
.


a.

Greater than because
V is increasing faster than
I

b.

Greater than because
I is increasing faster than V

c.

Less
than because
V is increasing faster than I

d.

Less

than because
I is increasing faster than V


What are the maximum current ratings for the 220


and 330

, 1 watt resistors on the
battery board?

2.

max current for 220

:



3.

max current for 330

:


If R1 and R2 are 220


and 330


respectively, calculate the equivalent resistance (
)
and the current through the circuit if the potential is supplied by a sta
ndard car battery
(12V). Also calculate the potential drop across each of the resistors individually (V1 and
V2). Show your work.


4.

equivalent resistance

(
)
:




5.

current through the circuit:




6.

V1:




7.

V2:



If R1 and R2 are 220


and 330


respectively, ca
lculate the equivalent resistance (
),
the current through the circuit, and the current through each resistor if the potential is
supplied by a standard car battery (12V). Show your work.


8.

equivalent resistance

(
)
:




9.

current through the circuit:




10.

cur
rent through R1:




11.

current through R2:




12.

Is a light bulb ohmic or non
-
ohmic?

a.
Ohmic


b.
Non
-
ohmic