The following circuit two identical flashlight bulbs A and B and three identical

Question

The following circuit two identical flashlight bulbs A and B and three identical resistors R. The battery maintains a constant potential difference across the circuit regardless of the various changes proposed in the questions. Be sure to explain your in each case. How do the brightness of A and B compare initially? Bulb A is removed. What happens to the brightness of B? Bulb A is replaced, and then B is removed What happens to the brightness of A? Bulb B is replaced. A wire is connected from point I to point 3. What happens to the brightness of each bulb? What happens to the potential differences between points 3 and 2? Return to the initial .A wire is connected from point 3 to point 4. What happens to the brightness of each bulb? What happens to the potential difference between points 1 and 3? Return to the initial condition. A wire is connected from point 2 to point 4. What happens to the brightness of each bulb and to the potential difference between points 1 and 4? Return to the initial condition. A fourth resistor, identical, identical to the either three, is connected between points 3 and 4. What happens to the brightness of each bulb and to the potential between point 3 and 4?

Explanation / Answer

a. lightbulb A is brighter ... there's more current through it b. brightness increases... resistance through that loop decreases so B gets more current c. brightness increases ... the equivalent resistance of the circuit goes down so more current goes through A d. Brightness is unchanged. Potential difference between 3 and 2 increases. e. Bulb A gets brighter because more current from less equivalent resistance. Bulb B gets dimmer (almost off) since almost no current will choose to go through it. f.Nothing happens g.brightness of bulb A decreases. Bulb B is unchanged. the potential difference of 3 and 4 increases

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.