Listen

Question

A circuit contains a 1.5 volt battery and a bulb with a resistance of 3 ohms. Calculate the current.

Question 1 options:

0.5 amps

4.5 amps

4.5 volts

0.5 ohms

Question 2 (3 points)

Listen
A 12 Volt car battery pushes charge through the headlight circuit resistance of 10 ohms. How much current is passing through the circuit?

Question 2 options:

120 volts

1.2 ohms

120 ohms

1.2 amps

Question 3 (3 points)

Listen
If a toaster produces 12 ohms of resistance in a 120-volt circuit, what is the amount of current in the circuit?

Question 3 options:

1440

10 amps

10 ohms

1440 ohms

Question 4 (3 points)

Listen
A subwoofer needs a household voltage of 110 V to push a current of 5.5 A through its coil. What is the resistance of the subwoofer?

Question 4 options:

605

20 volts

20 ohms

605 ohms

Question 5 (3 points)
Saved

Listen
How much voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms of resistance?

Question 5 options:

50 ohms

2 volts

2 amps

50 volts

Answer 1

Let's solve these questions one by one using Ohm's Law, which states:

$$V=I\times R$$

Where:

• $V$ is voltage in volts (V),
• $I$ is current in amperes (A), and
• $R$ is resistance in ohms (Ω).

Question 1:

Given:

• Voltage $V=1.5$ volts
• Resistance $R=3$ ohms

Using Ohm's Law, we can solve for current $I$: $$I=\frac{V}{R}=\frac{1.5}{3}=0.5\text{ amps}$$

Correct Answer: 0.5 amps

---

Question 2:

Given:

• Voltage $V=12$ volts
• Resistance $R=10$ ohms

Using Ohm's Law: $$I=\frac{V}{R}=\frac{12}{10}=1.2\text{ amps}$$

Correct Answer: 1.2 amps

---

Question 3:

Given:

• Voltage $V=120$ volts
• Resistance $R=12$ ohms

Using Ohm's Law: $$I=\frac{V}{R}=\frac{120}{12}=10\text{ amps}$$

Correct Answer: 10 amps

---

Question 4:

Given:

• Voltage $V=110$ volts
• Current $I=5.5$ amps

Using Ohm's Law to find resistance $R$: $$R=\frac{V}{I}=\frac{110}{5.5}=20\text{ ohms}$$

Correct Answer: 20 ohms

---

Question 5:

Given:

• Current $I=10$ amps
• Resistance $R=5$ ohms

Using Ohm's Law to find voltage $V$: $$V=I\times R=10\times 5=50\text{ volts}$$

Correct Answer: 50 volts

---

To summarize:

1. 0.5 amps
2. 1.2 amps
3. 10 amps
4. 20 ohms
5. 50 volts