+ I P ته R2 2 R 3 P₁ are In the diagram, the resistors of equal lengths Connect in series to a battery. Resistors R, R3 have the same resistivity P₁, while R₂ has a larger resistivity P₂>P₁. The diameter of R3 is twice that of R,, the diameter of R₁, R₂ are identical. a) Rank the currents through the resistors, largest to smallest (I,, I2, I₂) Rz from b) Rank the voltage differences AV,, AV₂, DV3 across each resistor, from largest to smallest. (R=PL and AV=IR)
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- A student makes a homemade resistor from a graphite pencil 5.00 cm long, where the graphite is 0.05 mm indiameter. The resistivity of the graphite is =1.38102/m . The homemade resistor is place inseries with a switch, a 10.00-mF capacitor and a 0.50-V power source, (a) What is the BC time constant of the circuit? (b) What is the potential drop across the pencil 1.00 s after the switch is closed?a). A circuit consist of five resistors connected as below, determine the effective resistance in the circuit. RI R2 Given that R1, R,Rs,RA and Rs are given respectively as 50, 25, 30, 60 and 70Q, what is the current in the circuit if the potential aeross the resistors is 24 V?connected con sist of five resis tors 7.a A circit as below. Determine the effective Tesistance in the circuit. RI RS- R2 R+ Ginen R, = sor, Rz=25Jr, R3= 30r, R¢=60r, Rs= 70r iD Wlhat is Hhe current is Hhe circuit iç the potential the resistors is 24 V? CICcross What is the potential that ccin be tapped across Rs? b.A circuit consist sisc capacitors connicted as below, detemine the effective capacitalnce. (3 G= SmF, G= Smf, G= 6mF, C4 = 6mF, Gaigg fo Cs= 8mF, C6 = 8 mF. What is the energy stored in the capacitors in ;circuit if the potential across %3D the the capacitors is 24V? C- lwo charges +3C and t 5C are placed 20Cm from in Yacuum- Wlhat magnitude of force will. their Centres they ebcert on each other, If Hhe sccond charge hes its polacity changed to negative (-sc). Inlliat would be the nature of the force ? Will there be a change in magnitude ? LPermitivity of free space a 8.8sx 10 -12
- The resistances are R1 = 3 N and R2 = 50, and the ideal batteries have emfs §1 = 3 V, §2 = 4 V and §3 = 5 V. a.) Determine the magnitude and direction of the current in each branch. b.) What is the potential difference Vab = Va - Vo? R R R1 RQ4 For the following network: (Answer A or B) (1)SA Rn R 20 V A. Find the Thevenin equivalent circuit for the portion of network external to the resistor R. B. Find the Norton equivalent circuit for the portion of network external to the resistor R.Whale and Kanmuro are two islands located in the Chimera archipelago. These two areseparated by a distance of 24 miles. A power link is to be established between them. Thepower link delivers a maximum power of 600 MW at full capacity with an operating voltageof 500 kV. a. Solve for the current at full power capacityb. Solve for the resistivity of the cable, assuming a conductor diameter of 2.5 cm
- Help me pleaseR V Two uncharged capacitors and a resistor are connected as in the figure. If V = 5V,c = 2200 uF ve R = 1Okn, a. What is the time constant of the circuit? (1 b. What is the maximum charge on the capacitor? ( c. What is the maximum current? d. How long will it take to "fully charge" the capacitor from the supply?What is the equivalent resistor between the terminals a and b if you replace R1 by 38 Ohm and R2 by 34 Ohm ? This combination of resistors goes to infinity by repeating itself. Write your answer in units of Ohm. No decimal points is necessary. Maximum od 4% of error is accepted in your answer.
- O Resources Ly Give Up Four resistors are connected to a battery as shown in the R,=2R figure. The current through the battery is I, the battery's electromotive force (emf) is E = 10.60 V, and the resistor values are R = R, R2 = 2R, R3 = 4R, and R4 = 3R. Find R, = R the voltages across each resistor. R= 3R V = 3.33 V 2.22 R,= 4R V2 = V V3 = 4.44 V V4 = 6.67 V 48°F wwA current of I = 4.7 A passes through the circuit shown, where R = 46 Q. I 3R 5R ww ww 2R 6R §2RR ww 10R 5R A. In terms of R, I, and numeric values, write an expression for the voltage of the source, V. B. What is the voltage, V in volts?R, R. Problem 36: Consider the circuit in the figure, with the current directions defined as shown. There are four resistors in this circuit (R1, R2, R3, and R4) and four batteries with emfs & = 16.5 V, & = 2.5 V, &3-10.5 V, and &4= 20.2 V, each with internal 20 2 resistance given by r; as marked in the figure. 0.50 R 60 Randomized Variables E2 81 = 16.5 V 82 = 2.5 V 83 = 10.5 V 84= 20.2 V 0.5 2 63 0.25 a R. 150 0.75 2 Otheexpertta.com Part (a) Calculate the current I1 in amps. Numeric :A numeric value is expected and not an expression. Part (b) Calculate the current I2 in amps. Numeric :A numeric value is expected and not an expression. Part (c) Calculate the current I; in amps. Numeric :A numeric value is expected and not an expression.