R2今Sliding contactR,全RIn the figure above, R, is to be adjusted in value by moving thesliding contact across it until points a and b are brought to the samepotential. (One tests for this condition by momentarily connecting asensitive ammeter between a and b; if these points are at the samepotential, the ammeter will not deflect.) Express R, in terms of Rs,R and R2 in the case when this adjustment is made.%3D

There will be no current flow from point a to b when, Va=Vb So, there is no current flow because the…

Answered: R2 -Sliding contact R, b R In the…

Similar questions

A conducting wire shaped in a “U shape” is connected to a 5 ohm light bulb.The 0.8 T external magnetic field is directed into the page as shown. A conducting bar of length 1.2 m is sliding on the conducting wire at 2 m/s to the right. What is the induced emf? Hint: the induced emf is the negative of the change in magnetic flux. The magnetic flux changes because the area of the U shaped wire placed in the magnetic field changes when the conducting wire slides to the right. Induced emf <=> emf = -N ∆Φ/∆t∆Φ =∆(BA)= B ∆A =B ( Af-Ai) Group of answer choices A) 1.92 V B) 0.8 V C) 2.4 V D) 6.8 V Please show how you solved the question and provide explanations. I am struggling in this section of physics, so I greatly appreciate your guidance.
C₂ U Example2: Find the total capacitance of the combination of capacitors shown in Figure. Assume the capacitances in Figure are known to three decimal places (C1=1.000 μF, C2=2.000 µF, and C3=5.000 µF).
Can you explain how the voltage drop across capacitor C2 is equal to 2V?
In the circuit shown in the figure, the capacitors are initially uncharged. The switch is first thrown to position A and kept there for a long time. It is then thrown to position B. Let the charges on the capacitors be Q1, Q2. and Q3 and the potential differences across them be V1, V2, and V3. Which of the following conditions must be true with the switch in position B? B Switch Vo C2 A. V = V2= V3 B. Q1 = Q2 = Q3 C. V + V2 = V3 D. V3 = Vo Seçimi Sifırla
Please asap
Three capacitors are connected as shown, where C = 0.045 F. A. Input an expression for the equivalent capacitance between points a and b, in terms of C. B. What is the capacitance, in farads? C. If the capacitors are charged with a ΔV = 10 V source, how much energy will the circuit store, in joules?
Part A The flash unit in a camera uses a special circuit to "step up" the 3.0 V from the batteries to 280 V, which charges a capacitor. The capacitor is then discharged through a flashlamp. The discharge takes 12 us, and the average power dissipated in the flashlamp is 1.0x105 W. What is the capacitance of the capacitor? Express your answer with the appropriate units. µA C = Value Units Submit Previous Answers Request Answer
Consider two oppositely charged, isolated parallel plates separated by distance D, with capacitance C, charge Q, and stored energy U. D is small compared to the dimensions of the plates. Select all the statements that are true. If none of them are true, select "None of the above." A. When D is doubled, U increases.B. Inserting a dielectric decreases C.C. Inserting a dielectric increases Q.D. Increasing D, leaves the E field unchanged.E. When D is halved, Q stays the same.F. Because of energy conservation, inserting a dielectric leaves U unchanged.G. When D is doubled, C is doubled.H. None of the above.
Please show all work and do all parts.
Item 21
An air-filled parallel plate capacitor of capacitance C is charged with a battery of emf V . The battery isremoved, and the distance between the plates is doubled. Which of the following best describes how theenergy stored in the capacitor has changed and provides reasoning to justify this claim?A. The stored energy has increased, because work was required to pull the oppositely charged plates apart.B. The stored energy has decreased, because the capacitance is now less and the potential difference across the plates remains the same.C. The stored energy has increased, because the capacitance and potential difference across the plates have both increased.D. The stored energy has decreased, because potential difference across the plates has decreased.E. The stored energy has remained the same, because the capacitance has decreased and the potential difference across the plates has increased.
Q3 Consider three capacitors C1, C2, C3, and a battery. If C¡ is connected to the battery, the charge on C is 30.8 µC. Now Ci is disconnected, discharged, and connected in series with C9. When the series combination of C2 and C¡ is con- nected across the battery, the charge on C¡ is 23.1 µC. The circuit is disconnected and the capacitors discharged. Capacitor C3, capacitor C1, and the battery are connected in series, resulting in a charge on C¡ of 25.2 µC. If, after being disconnected and discharged, C1, C2, and C3 are connected in series with one another and with the battery, what is the charge on C1?

SEE MORE QUESTIONS