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
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