A resistor is to have a constant resistance of 30.0 ohms, independent of temperature. For this, an aluminum resistor with resistance Ro1 at 0º C is used in series with a carbon resistor with resistance Ro2 at 0º C. Evaluate Rojand Ro2.
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- cs-IIB Physics-IIB 500 75.J In a potentiometer experiment, the balancing nown length with a cell is 560cm. When an external fo aps of resistance of 10 ohms is connected in parallel to the cell the balancing length changes by 60 cm. The internal resistance of the cell in ohms is: When 2,the 1) 3.6 2) 2.4 1.2 4) 0.6 (76) The resistivity of a potentiometer wire is, if the area of cross section of the wire is 4cm? the current x' is flowing in the circuit is 1A,the potential gradient is 7.5 v/m Own ght t is 3 × 103 2-m 2) 2 x 1062-m 3) 4 x 1022-m 4) 5 x 1042-m A potentiomete wire of 10m length and 20 Ohm resistance is connected in series with a resistance R ohms and a battery of emf 2V, negligible internal resistance. Potential gradient on the wire is 0.16 millivolt/centimetre then R is---ohms A 230 77. ea 1) 50 2) 60 4) 46.6 gREDMI NOTÉ GIPRO meter has a wire of 100cm length MI DUAL CAMERA and its resistänce is 10 Ohms. It i 2021/11/17;22effes nected inFor problem 29 find the magnitude of the current in resistor 1 if it has a resistance of 18.4 Ohms with E = 12.0 V and R2 = 18.0 Ohms. (Answer in 5 sig. figs)ΔVbatteryΔVbattery = 9 volts, R1 = 6 ohms, and R2 = 7 ohms. How many joules per second are used up in resistor R2? Enter a number to the nearest 0.01 with no units; e.g., 6.71, 49.53.
- Tha battery with unknown emf and internal resistance r is supplying electrical power of 18 mw to a single resistor of unknown resistance R. If the total current in the circuit is 3 mA, determine the terminal voltage of the battery. O 6 mv O 54 v O 54 mv O 6 vPage 1 of 4 1. A resistor network is connected to an ideal battery. RA RB All resistors are 10.0 ohms The battery voltage Vb = 100.0 volts Calculate the current in resistor RD in amperes. V, 74°F ( ツ Rc RpIn (Figure 1), the total resistance is 20.0 k2, and the battery's emf is 33.0 V. The time constant is measured to be 12.0 us Figure He Take Test: PHY1200-1... + R ww E S C: 1 of 1 https://www.prometric... Submit ▼ Part B ✓ Correct y pearson login - Yahoo... Previous Answers Calculate the time it takes for the voltage across the resistor to reach 16.0 V after the switch is closed. Express your answer to three significant figures and include the appropriate units. Provide Feedback μA 6 t= 7.968 10 S Xb b MacBook Air Submit Previous Answers Request Answer X.10" X Incorrect; Try Again; 3 attempts remaining X Pearson Course Home y cunyfirst login - Yaho. Review I Constants Copyright © 2022 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy | Permissions Contact Us | Next >
- For the circuit shown in the Figure, a 5.0A current is measured coming from the 60.0V EMF E. Find R and the current through the 3R resistor. Hint: find the equivalent resistance. R 2R m 3R www R ww R 15.0A 5.0 A 60 VWith dry skin of the hands, the resistance between the palms of the hands can reach R1 Ohms). Find the current that will pass through the human body in contact with a U = 220 V power grid. Compare this current with the threshold values of tangible and non-releasing currents. 105 Ohms, and with wet hands this reşistance is much less (R2 = 103resistor of resistance r is connected to a power source of voltage v to form a circuit. the current through the power source is i = 1.0 a. how many resistors r must be connected parralel to r to increase the current i to 5.0 a? let r = r.
- The internal resistance of the DMM is 10 M when used as a voltmeter. Calculate Req of the voltmeter connected to a resistor in the circuit.When two unknown resistors are connected in series with abattery, the battery delivers 225 W and carries a total currentof 5.00 A. For the same total current, 50.0 W is delivered whenthe resistors are connected in parallel. Determine the value ofeach resistor.Three resistors A, B, and C are connected parallel and take a total of 7.9 A. Resistor A takes 2.5 A and has a resistance of 48 ; also, the current through B is twice as much as that through C. Calculate (a) la and Ic, (b) the line voltage, (c) Rs and Re..