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- Equation1: Q(t)=CVcap(t) Equation 2: Qcharging(t)=CV(1−e^(−t/RC)) 1. Combine equations 1 and 2 to create an equation capable of finding the time-dependent voltage across a charging capacitor. Equation 3: I(t)≡(dQ(t))/(dt) 2. Combine equations 2 and 3 to create an equation capable of finding the time-dependent current across a charging capacitor.hw6 A current of I = 1.4 A is passing through a conductor with cross sectional area A = 4.5 × 10-4 m2. The charge carriers in the conductor, electrons, have a number density n = 9.7 x 1027 m-3. Calculate the numerical value of v, in m/s.a) What is the charge of an oil droplet if the droplet has a mass of 2 μg and is at rest in a potential difference of 200 V and the plates are 1 cm apart, with the positive plate on the top.b) What is the air resistance exerted on the same droplet if it is moving down at a speed of 2 μm/s at a voltage of 160 V? What is the proportionality constant, C?
- The radii of the two concentric conductive spheres are r1 and r2>r1. The resistivity of the material between the spheres is p. If the total current I from the inner sphere to the outer sphere, Find the electric potential difference between the spheres.Give your answer in terms of (r1, r2, p, I).Two parallel plates with an area of 3.0 cm2 are separated by a 2.5 mm thick dielectric with a constant of 4.70. If the potential difference between the plates is 120 V and the conduction current ic is 6.00 mA a) what is the charge (q) on each plate?1. A cell membrane is 7.0 nm thick, with a 70 mV potential difference across the membrane. What is the electric field strength inside the membrane?
- The capacitance of a parallel-plate capacitor is proportional to the area of its plates and inversely proportional to the plate separation. O True O False The drift speed of electrons in a copper wire carrying 10 A current is much greater than 1 m/sec. O True O False The electric power dissipated in a resistor is eventually converted to kinetic energy of charges. O True O FalseChapter 26, Problem 026 In Figure (a) below, a 10.80 V battery is connected to a resistive strip that consists of three sections with the same cross-sectional areas but different conductivities. Figure (b) gives the electric potential V(x) versus position x along the strip. The horizontal scale is set by xg = 8.24 mm. Section 3 has conductivity 3.014 x 107 (2.m)1. What is the conductivity of section (a) 1 and (b) 2? x= 0 x= Xs (a) (b) x (mm) (a) Number Units (b) Number Units (A) AThe following image is of a voltmeter, which measures electric potential, in volts (V). A:A: What is the smallest increment on the voltmeter? B:B: What is the uncertainty? Select two answers: one for question AA and one for question B.