Question
f a 9.0 V battery is connected to a light bulb, what is the potential difference across the bulb?
a
18 V
b
9.0 V
c
3.0 V
d
4.5 V
Question 11 (1 point)
Three resistors with values of 4.0 Ω, 6.0 Ω, and 8.0 Ω, respectively, are connected in series. What is their equivalent resistance?
a
18
b
6.0
c
1.8
d
8.0
a
18 V
b
9.0 V
c
3.0 V
d
4.5 V
Question 11 (1 point)
Three resistors with values of 4.0 Ω, 6.0 Ω, and 8.0 Ω, respectively, are connected in series. What is their equivalent resistance?
a
18
b
6.0
c
1.8
d
8.0
Answers
GPT-4o mini
For the first question regarding the potential difference across the light bulb connected to a 9.0 V battery, the answer is:
**b. 9.0 V**
This is because the potential difference across the bulb is equal to the voltage of the battery when the bulb is connected directly across it.
For the second question about the equivalent resistance of three resistors connected in series (4.0 Ω, 6.0 Ω, and 8.0 Ω), the equivalent resistance \( R_{\text{eq}} \) can be calculated by summing the resistances:
\[
R_{\text{eq}} = R_1 + R_2 + R_3 = 4.0 \, \Omega + 6.0 \, \Omega + 8.0 \, \Omega = 18.0 \, \Omega
\]
So, the answer is:
**a. 18**
**b. 9.0 V**
This is because the potential difference across the bulb is equal to the voltage of the battery when the bulb is connected directly across it.
For the second question about the equivalent resistance of three resistors connected in series (4.0 Ω, 6.0 Ω, and 8.0 Ω), the equivalent resistance \( R_{\text{eq}} \) can be calculated by summing the resistances:
\[
R_{\text{eq}} = R_1 + R_2 + R_3 = 4.0 \, \Omega + 6.0 \, \Omega + 8.0 \, \Omega = 18.0 \, \Omega
\]
So, the answer is:
**a. 18**