A. TABLE OF RESISTIVITY:Compare the resistance of the following NO RE SISTIVITY (p) LENGTH (L) ARE A (A) RE SISTANCE (R) sam e sam e thrice sam e halved halved sam e halved doubled 4 sam e doubled halved sam e thrice sam e 2.
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- 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?moodle.nct.edu.om/m arning Portal Courses Reports e-Services - Academic Departments ETC CIMS - äö pio Moving Forward purses / PHYS1100 / Homework No.2/ Homework No.2 An iron wire has a diameter 3.05 mm and resistivity 9.71x 10-8 Qm. What will be the length of this wire to make a resistance of 302. What will be the new resistance, if the radius is doubled? (a) Length of the wire (in m) = (b) Resistance of the wire (in )N = Next page Upload your Homework 2 Answer - Jump to.. pad - Quiz-2 OneDrive CH6VZR403C NG 4) G E DELLGiven that V is the voltage across the resistor and I is the current through the resistor, the energy dissipated by a resistor of resistance Ris given as: O 1² Rt O More than two answer can be found on the other choices. O V²Rt O P²t/R
- Two resistors of resistance 230 O and 340 O are connected in series (one after the other). A potential difference of 20 V is applied between the ends of the chain. a)What is the total resistance of the circuit (in O)? Give your answer as a whole number. b)Calculate the current flowing through the circuit (in A). Gve your answer to 3 d.p. and use this value to that degree of accuracy, in subsequent calculations, if needed. c)Calculate the potential difference across the 230 O resistance. Give your answer in volts to 2 d.p..You have done the Wheatstone Bridge experiment using a power supply with emf Vo and a wire of length L and resistivity p and determined the balance point for unknown resistance Ry, known resistoance Rs, Which of the following will keep fixed the ratio of L2/L? O a. Changing the known resistance and fixing other variables. O b. Changing the unknown resistance and fixing other variables. O c. Varying the length of the wire and keeping everything else the same. O d. Changing emf of the power supply and keeping everything else the same. O e. Changing the resistivity of the wire and keeping everything else the same.Ris the total resisteance of three resistors, connected in parallel, with resistances R1, R2, R3. then R1 R2 R3 If the resistances are measured in ohms as R1 = 45N, R2 = 40N, and R3 = 302, with a possible error of 0.4% in each case, estimate the maximum error in the calculated value of R. N. AR =
- An Iron wire at 0 Celcius has resistivity Ro. At which temperature the resistiv- ity of this wire will be 1.2R9. You can find the value temperature coefficients of resistivity from Table 25.2 from your book. Explain the physical mechanism of rising resistivity by the rising temperature.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 -12DLTAILJ TRLUIOUJ ANJULIJ 03CULPHI32010 20.3.0WA.U21. Mf NOTS ASK TUUR TEACHER PRACTICE ANUTHER Consider a portion of a cell membrane that has a thickness of 7.50 nm and 1.3 um x 1.3 um in area. A measurement of the potential difference across the inner and outer surfaces of the membrane gives a reading of 92.6 mV. The resistivity of the membrane material is 1.30 x 107 2. m. (a) Determine the amount of current that flows through this portion of the membrane. A (b) By what factor does the current change if the side dimensions of the membrane portion is halved? The other values do not change.
- Dexter is maufacturing guy at laboratory inc. he is manufacturing the turnicated cone shape below. Iron has a resistivity of 1.0x10^(-7). Help dexter calculate the resistance between the two circular ends of the tunricated iron conductor below. 2.00 cm 20.0 cm 1 4.00 cmwwww R2 R1 ww R3 V A 5-year old has nothing better to do than to connect three resistors to a voltage source as shown. The resistors are R1=40 2, R2=69 2, and R3=15 2, respectively, and the voltage source has 2.5 Volts. What is the total resistance? Submit Answer Tries 0/2 What is the current through the voltage source?= 250 [12]. Andami namang resistors! Consider the resistor network shown in the figure, with R₁ R₂ = 1.0 [kN], R3 = 1.2 [kN], R4 = 1.0 [kN], and R5 = 1.5 [k]. The source voltage & is 24 [V], and has no internal resistance. What is the current passing through R₁? E R₁ www www R₂ O A. 34 [mA] O B. 54 [mA] O C. 96 [mA] O D. 104 [mA] www R3 R4 R5