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- An aluminium wire 7.5 m long is connected in a parallel with a copper wire 6 m long. When a current of 5 A is passed through the combination, it is found that the current in the aluminium wire is 3 A. The diameter of the aluminium wire is 1 mm. Determine the diameter of the copper wire. Resistivity of copper is 0.017 uN-m; that of the aluminium is 0.028 µN-m um (CONVERT TO NEAREST WHOLE NUMBER)arrow_forwardA 150-volt electromotive force is applied to an RC-series circuit in which the resistance is 1500 ohm and the capacitance is 5 micro Farad (uF). If q(0)=0, find the charge and current at t=0.005 s. charge: q = micro Farad (uF) current: i = milli ampere (mA) Determine the charge as t approaches infinity. charge: q= micro Farad (uF)arrow_forwardFor the following network: a) Write the expression for the current i and the voltage v̟ after the switch is closed at the instant t = 0. b) Determine the expression for the current i̟ and the voltage vi after the switch is opened at the instant t= 2t. c) Sketch the waveforms of in and vi for the time periods defined by parts a) and b). 10 ko L 33 k2. 30 V 8.5 k2 4 mHarrow_forward
- The total charge entering a terminal of an element is given by q = 2t³ – 4t mC.Find the current i at t=1 and t=2s. The current entering a terminal is given by i = 1+ Tsin(2nt) A. Find the total charge entering the terminal between t=0 and t=2.5s. 3.arrow_forwardAt t = 0 an emf of 20 volts is applied to a circuit consisting of a 2 henry inductor in series with a resistance of 400 ohms. If the current is zero at t = 0. What is it at any time t ≥ 0?arrow_forwardThe quantity of charge Q in coulombs (C) that has passed through a point in a wire up to time t (measured in seconds) is given by Q(t) = t3- 4t2 + 6t+ 4. [See this example. The unit of current is an ampere 1 A = 1 C/s.] (a) Find the current when t = 0.9 s. A (b) Find the current when t = 1 s.arrow_forward
- Q2:For the circuit and waveform shown in figures below ,calculate: 1. Sketch the waveform of charge and the amount of charge has entered the box at :t-1s, t-3s and t= 4.5s 2. the power absorbed at t-1s ,t=2.5 s,t=4.5 s and t=5.5 s 3. The energy absorbed by the box between 0 and 6 s 1 (1) (A) i (1) 2v 3 r(x)arrow_forwardIn the attached image, find the current i at time t=0.0062265 seconds. (The energy stored in the the capacitor at t=0 is 0 Joules.) The given values are V1 = 58 V, R1 = 90 ohms, R2 = 32 ohms, R3 = 26 ohms, L = 0.44 Henries, C = 0.14 Farads.arrow_forwardA 4-A current charging a dielectric material will accumulate a charge of 24 C after 6 s. Select one: O a. True O b. Falsearrow_forward
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