Why does power supply decrease when you add additional resistors in series? (For example, using 3 resistors in series versus 4 resistors in series) I understand that as you increase the number of resistors in series, it increases the equivalent resistance. If the equivalent resistance increases, and the voltage stays the same, then the current decreases (V=IR). Then you can say P=V^2/R, which means that the power decreases, right? But shouldn't the total power be the same as the first situation? I understand that the, say, lightbulbs would be dimmer, but wouldn't the overall power be the same?
When the resistors connected in series it adding up more resistance hence less power will be delivered. By the conservation of energy the out put power must be equal to the dissipated power of the resistors. So as we increase the resistors in series it also increases its dissipated power so the light bulbs would be dimmer. So from conservation of energy amount of power being dissipating in the circuit at all resistors must be equal to the power supplied.
Why does power supply decrease when you add additional resistors in series? (For example, using 3...
A circuit consists of two resistors connected in series with a power supply, as shown in the figure. The resistance of ?1 is less than the resistance of ?2. A series circuit with two resistors R subscript 1 and R subscript 2. R subscript 1 is connected to the positive terminal of the power supply, and is the first resistor in the circuit. Which resistor has the greater current flowing through it? ?2 ?1 The current through each resistor is...
6. Three resistors are connected in series with a 12 V power supply: 1.2 k12, 2.5 k12, and 1.8 k? a. Draw a diagram of the circuit. b, what is the equivalent resistance of the circuit? C. Fill out the values for current, voltage, and power on the following table. SHOW ALL YOUR WORK FOR FULL CREDIT. (Give your answers in mA, V, and mW.) 1.2 2.5 1.8
A circuit consists of two resistors connected in series with a power supply, as shown in the figure. The resistance of Ri is greater than the resistance of R2 Which resistor has the greater current flowing through it? O The current through each resistor is the same. Which resistor has the greatest voltage difference across it? The voltage across each resistor is the same.
Suppose you have a DC power supply connected in series with two identical resistors by low-resistance connecting wires. You set the power supply to a potential difference of 6.0 V. Which of the following statements, if any, hold true? The same potential difference will appear across each resistor. The same amount of current will flow through each resistor. The same amount of current will flow through the power supply as flows through each resistor. The potential difference across each resistor...
Question 2. (15 points) Four resistors are connected as shown in Figure 28.9a (a) Find the equivalent resistance between a and c. R1-16 Ω, R2-139, R3-49, and R4-12 Ω Rs (b) What is the current in each resistor if a potential difference of 0.64 V is maintained between a and. Calculate the current in each resistor I (for Ri resistor)- I (for R resistor) I (for R, resistor)- I (for R resistor Which resistor uses more power, R or R,....
A circuit is constructed with five resistors and one real battery as shown above right. We model. The real battery as an ideal emf V = 12 V in series with an internal resistance r as shown above left. The values for the resistors are: R1 = R3 = 22 Ω, R4 = R5 = 82 Ω and R2 = 147 Ω. The measured voltage across the terminals of the batery is Vbattery = 11.6 V. A circuit is constructed...
A circuit is constructed with five resistors and one real battery as shown above right. We model. The real battery as an ideal emf V = 12 V in series with an internal resistance r as shown above left. The values for the resistors are: R = R3 = 40 N, R4 = Rs = 80 and R2 = 142 N. The measured voltage across the terminals of the batery is Vbattery = 11.41 V. I R R R R4...
1. Why can the DSO only measure node voltages when the Function Generator is the power supply in a circuit (unless it is using a current probe)? 2. Consider Figure 1. According to the calculations in the lab handout, if Z-1kΩ +/6914, then the phase difference (фи-фі) between u(t) and i (t) is 34.6". a. If this v(t) and i(t) were displayed on a DSO (v(t) being a node voltage and using a current probe for i(t) as shown in...
Q1. You are given a 12 V DC power supply. You are expected to develop a voltage divider to achieve a voltage of nominal 5V value using a pair of resistors from the E 12 range, with the restrition that you are not expected to draw a current of more than 1 mA from the 12 V DC supply i. Develop a simple circuit showing the possible values for each resistor pair, and the range of the DC output possible...
Il. Law of Length 1. Connect terminals 1' and 2' together, then connect the power supply 2. Using the SV range of the voltmeter measure the voltage between I and 1'. Record in Table 3. sure the voltage drop between 1 and point midway between I and I'. Record in Table 3. 4. Repeat for quarter of length and 1/8 of a length. Record in Table 3 Table 3 No. Length of the wire Voltage measured (V Half length Quarter...