Three light bulbs with identical resistances (8 ) are in a circuit as shown in the figure. What is the ratio of the brightness of bulb B to the brightness of bulb C? (brightness is proportional to power) O 2.0 O 1.0 O 0.25 O 4.0 O 0.50
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- Four resistors are connected as shown below. R1 = R2 = R3 = R4 = 36 Ω. The voltage across the battery is 130 V. What is the voltage across R2, in Volts?Consider the circuit shown in the diagram below. The battery has a voltage V = 12.0 V and the resistors have the following values. R₁ = 4.07 ; R₂ = 8.14 2; R3 = 20.35 ; R4 = 12.212 How much current flows through each of the four resistors? I1 A I2 = A I3 = A I4 = A R₁ R₂ R3In the circuit shown, how much voltage is used by D? A E 5.58 V 5.06 V 6.11 V 4.38 V 9V 4500 3500 3000 4002 2502
- Four students are given the values for voltage (V) and current (I) in four different circuits. Each student is asked to calculate the correct resistance (R) for the circuit. Resistance of Four Circuits Student V (volts) I (amps) Calculated R (ohms) Student A 240 3 80 Student B 6 60 10 Student C 100 2 400 Student D 5 50 250 Which student calculated the correct relationship between V, I and R, and why? A Student A, because R=V/I B Student B, because R=I/V C Student C, because R=VI^2 D Student D, because R=IVThree resistors are connected as shown to a battery. The value of the resistors are: R1 = 1.25KΩ R2 = 1.5kΩ and R3 = 3kΩ. The battery voltage is measured to be 45V. (i) What is the equivalent resistance for the circuit? (ii) What is the voltage drop over R2?17:01 ← Quiz1-1.pdf ATIONAL D ISLAMIC INTERNATIONAL ISLAMIC UNIVERSITY, ISLAMABAD Department of Physics Quizl ISLAMABAD Determine the total resistance and the voltage at points A, B, and C in the circuit given below R₁ w R3 ww Rs w 18 V 4.7 ΚΩ R₂ 1.0 ΚΩ 1.0 ΚΩ R4 R6 2.2 k 2.2 k 1.0 ΚΩ 3 55
- You connect five identical resistors in series to a battery whose EMF is 12.0 V and whose internal resistance is negligible. You measure the current that the circuit draws from the battery and find 0.719 A. What are the resistance of each resistor and the potential difference across each resistor? resistance: potential difference: VThree resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. 60 N 10 2 30 0 B What is the equivalent resistance between the points A and B? O 200 O 100 Q O 30 2 O 100 O 502Four resistors are connected as shown below. R₁ = R₂ = R3 = R4 = 3.0 02. The voltage across the battery is 156 V. What is the current through the battery, in Ampere? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. R₂ R₁ ww Hi R₂ R₂