Consider the following resistive circuit. R1= 15 N R2= 5 Q R4 = 8 Q R3= 5 N What is the voltage drop across R4? 12 V
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I'm not sure how to setup this problem using the loop rule.
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- Needs Complete typed solution with 100 % accuracy.Coil A is a large 1000 turn circular coil of radius 68.0 cm. Circular coil B has 200 turns, a radius of 3.0 cm and is located L = 56.0 cm from coil A along the same axis. The planes of the two coils are parallel. Find approximately the mutual inductance of this pair of coils. *Note* As coil A is much larger than coil B, the B field due to A in the region of B is fairly constant. Use this approximation and proceed.At t = 0, the open switch in the figure below is thrown closed. We wish to find a symbolic expression for the current in the inductor for time t > 0. Let this current be called i and choose it to be downward in the inductor in the figure below. Identify i1 as the current to the right through R1 and i2 as the current downward through R2. From the equations found: i = i1 - i2 emf = i1R1 + i2R2 emf = i1R1 + L (di/dt) (a) Eliminate i1 and i2 among the three equations to find an equation involving only the current i. (Use the following as necessary: i, R1, R2, L, E for emf, and di/dt) 0 = ? (b) Compare the equation in part (d) with E − iR − (L di/dt) = 0 in the text. Use this comparison to rewrite i =(E/R)(1 − e−t/τ) in the text for the situation in this problem and show that i(t) = (E/R1)(1 − e−(R'/L)t) where R' = R1*R2/(R1 + R2).
- For which of the helices shown in the figure is the north pole at the right?The switch K in the circuit shown in the figure is open, and there is no current in the coil. At a given moment we close the switch. a) Find the current and the voltage of the resistors and the coil right after the close of the switch. After waiting until the current becomes constant in the circuit, we open the switch. b) Find the current and the voltage of the resistors and the coil right after the open of the switch.