In (Figure 1) the battery has emf 45.0 V and negligible internal resistance. R₁ = 7.00 2. The current through R₁ is 1.50 A and the current through R3 = 4.50 A. Figure www R₁ www R₂ ww R3 1 of 1 ▼ What is the resistance R₂? Express your answer with the appropriate units. R₂ = Submit Part B HÅ R3 = Value Request Answer What is the resistance R3 ? Express your answer with the appropriate units. HÅ Units Value Units ? ?
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- Resistance in metals increases with increasing temperature according to the equation, ρ(T) = ρo(1 + α(T - To)) where α is the temperature coefficient of resistivity and ρo is the resistivity at temperature To. For a particular wire α = 9.5 × 10-3 1/°C and the resistivity is ρo = 4.5 × 10-7 Ω⋅m at To = 154 °C. a). Input an expression for the temperature T2 at which the resistance of a wire will be twice as high as at T0. b). If the wire is L = 1 m long with a radius of r = 1 cm, what is its resistance R, in Ω, at 2To?1.00 MQ A conducting sphere is charged by an emf source & through a 1.00 Mn resistor. When the sphere is fully charged, it has 1 µC charge. The highest current during the charging was 1 mA. What is the radius of the sphere in meters? İletken bir küre 1,00 M2 direnç üzerinden E emk kaynağı ile yüklenmiştir. Küre tamamen yüklenince 1 µC yüke sahiptir. Yüklenme sırasında en yüksek akım değeri 1 mA olarak gözlenmiştir. Kürenin yarıçapı metre cinsinden nedir?Three resistors of resistances R1 = 14.8 Ω, R2 = 70.3 Ω, and R3 = 39.7 Ω are connected in parallel. What is the equivalent resistance (Req,p)?
- An electric device draws 7.50 A at 240 V. Part A If the voltage drops by 11 % , what will be the current, assuming nothing else changes? Express your answer using two significant figures. ΑΣφ ? I = A Submit Request Answer Part B If the resistance of the device were reduced by 11 % , what current would be drawn at 240 V? Express your answer using two significant figures. ΑΣφ ? I = A Submit Request Answer Drovid.A cylindrical conductor has resistance of R0 = 120 Ω. It has length L, radius of the cross section r, and resistivity ρ. Express the resistance in terms of L, r, ρ. R0 = I have tried r L/ρ ,( ρ L/r ),L/r, r L/ρ, ( ρ L/r ), ( P L/π r2 ), and ( ρ L/π r2 ) None of these are correct please help me figure out the correct equation.A cylindrical conductor has resistance of R0 = 120 Ω. It has length L, radius of the cross section r, and resistivity ρ. Part (a) Express the resistance in terms of L, r, ρ. R0 = P L/π r2 This equation is incorrect Part (b) If the resistivity increases by a factor of 5, what would the value of the new resistance be, in ohms? Rρ =600 Part (c) If the resistivity was restored to its original value and instead the length of the conductor decreased by a factor of 5, what would the value of the new resistance be, in ohms? Rl = Part (d) If the resistivity and length of the conductor were at their original values and the radius of the conductor increased by a factor of 4, what would be the value of the new resistance, in ohms? Rr =
- The resistance R of a piece of wire has thermometric properties which can be described as a linear function of temperature (T, in C), R=mT¹/2+n Where m and n are constants. The resistance of the wire is found to be 4.80 at the temperature of melting ice (0.0 ℃) and 9.30 № at the boiling of water (100 °C) at atmospheric pressure. a) Find the constants m and n. b) Determine the temperature when R is 7.95 №. c) Based on the information provided above, is this wire element suitable for determining temperature below 0 ℃?If R1 = 27 02, R2 = 85 02, and R3 = 42 02, find the current through R3. Source of emf 1 (E1) = 18 V Source of emf 2 (E2) = 5 V R₁ www E₂ E R₂ R₂ www ROUND OFF ANSWER UP TO 2 DECIMAL PLACES. INPUT BOTH THE NUMBER AND UNIT (LETTER ONLY). INCLUDE THE SIGN IF THE ANSWER IS NEGATIVE.A small bulb delivers an electrical power of 7.5 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity of alpha = 4.5 x 10 ^ (- 3 / ° C) When the filament is hot bright, its temperature is seven times the ambient temperature of a room (20 ° C). What is the resistance of the filament (in ohms) at room temperature? a.5630 b.4530 c.1911 d.1280 e.1350
- In the circuit shown, Determine the following: A. Magnitude and direction of the current (Ans. I = 0.3889 A, CCW) B. The potential differences Vad, Ver and VreA conductor bar (o=5.8*107 S/m) of square cross section (DxD) has a circular bored along its length of L (m). Side length of square is D and diameter of circular hole is d. Find the resistance (R) in nano ohms between square ends for d=0.7 cm, D=4.9 cm and L=5.3 m. O a. 40612.76 O b. 30943.06 O c. 38678.82 O d. 34810.94 O e. 42546.70What is the total current (in A) passing through the circuit if V = 12 V, R1 = 40 Q, R2 = 20 Q, and R3 = 40 0? Give your answer as only the numerical value in the SI units specified. e is interpreted as x10^ for use with large or small values; 1.01e2 is interpreted as 1.01 x 104. R2 R1 R3