F3-10. Determine the tension developed in cables AB, AC, and AD. D B 60% 120° 45% A 300 lb 60° 30°
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Q: a) 1/R=1/R1+1/R2 R1=60Ω R2=40Ω 1/60Ω+1/40 Ω= 2+3/120 Ω So R=1/24 Ω What's wrong with this?…
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- This diagram represents a DC circuit. What is the amperage flowing in the circuit1 1 1 1 AV = IR, Req,ser = R₁ + R₂ + R3 + + ... ' Req,par R1 R2 R3 Problem 1: In the circuit show below, R₁ = 4, R2 = 102, R3 = 60, R₁ = 8, R5 = 8N, ε = 9V. What are Req, 11, 12, 13, 14, I5? Answers: Req = 9 £2, 1₁ = 1 A, I2 = 0.5 A, 13 = 0.5 A, 14 = 0.25 A, 15 = 0.25 A. R2 R5 15 12 I₁ w 13 R3 13 R4 14 I- R1 EThis question is NOT in DC steady state. ℰ and R₁ are unknown. R₂ = 6 Ω, R₃ = 4 Ω, L = 7 Henrys, I₂ = 4 A, and I₃ = 9 A. Calculate dI₃/dt. (The answer may be negative)
- A square loop has a charge density λ = |x| at y = ±a and [x]Physics students, wanted to investigate the forces of attraction (F) between two parallel conductors carrying currents li and l2 (also known as Ampere's Law) The students noticed that as the length of the parallel conductors (/) was increased the force of attraction between the conductors (F) also increased. The data collected is in the |L= SA conductor 1 average separation (d = 0.50m) table: conductor 2 Length, / (m) Force, F (x 10-5 N) 12= 5A 1.00 9.00 1.20 10.8 1.40 12,5 1.60 14.2 1.80 16.2 (iii) On the grid plot the force and length values from the table. (iv) Draw the line of best fit (v) Find the slope of the line of best fit. (c) Use the slope calculated and the Ampere's Law equation to determine the experimental value of the magnetic force constant, k.= In the figure below, the rolling axle, 1.50 m long, is pushed along horizontal rails at a constant speed v = 11.00 m/s. A resistor R 0.4000 2 is connected to the rails at points a and b, which are directly opposite each other. The wheels make good electrical contact with the rails, so the axle, rails, and resistor form a closed-loop circuit. The only significant resistance in the circuit is R. A uniform magnetic field B = 0.0700 T is vertically downwards. 100 (a) Find the induced current I in the resistor. A (b) What horizontal force F is required to keep the axle rolling at constant speed? N (c) Which end of the resistor, a or b, is at the higher electric potential? O Point a is at a higher potential. Point b is at a higher potential. Point a and Point b are at equal potentials. (d) After the axle rolls past the resistor, does the current in R reverse direction? Yes No Explain your answer.