Ohm's law for electrical circuits like the one shown in the figure states that V = RI. In this equation, V is a constant voltage, I is the current in amperes, and Ris the resistance in ohms. Your firm has been asked to supply the resistors for a circuit in which V will be 240 volts and I is to be 20±0.2 amp. In what interval does R have to lie for I to be within 0.2 amp of the value I, = 20? R. To what interval must R be held to meet the requirements for the resistance? ohms

Ohm's law for electrical circuits like the one shown in the figure states that V = RI. In this equation, V is a constant voltage, I is the current in amperes, and Ris the resistance in ohms. Your firm has been asked to supply the resistors for a circuit in which V will be 240 volts and I is to be 20±0.2 amp. In what interval does R have to lie for I to be within 0.2 amp of the value I, = 20? R. To what interval must R be held to meet the requirements for the resistance? ohms

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 78P: The prefix “mega” (M) and “kilo” (k), when referring to amounts of computer data, refer to factors...

See similar textbooks

Similar questions

The electrical power, P (in watts), transformed by an electrical appliance is given by P = f(i) = 9i2 , where i is the electrical current flowing through the appliance, in amps. Find f(10) and f'(10), and interpret them in the context of this problem.
The voltage V (volts), current I (amperes), andresistance R (ohms) of an electric circuitare related by the equation V = IR. Suppose that V is increasing atthe rate of 1 volt/sec while I is decreasing at the rate of 1/3 amp/sec. Let t denote time in seconds. What is the value of dI/dt?
The voltage V (volts), current I (amperes), andresistance R (ohms) of an electric circuitare related by the equation V = IR. Suppose that V is increasing atthe rate of 1 volt/sec while I is decreasing at the rate of 1/3 amp/sec. Let t denote time in seconds. What equation relates dR/dt to dV/dt and dI/dt?
Of the following quantities, which one has dimension different from the remaining three? (a) Energy per unit volume (b) Force per unit area (c) Product of voltage and charge per unit volume (d) angular momentum
It's saying the 0.0399 is incorrect. The units is g/mol. Thank you for your help.
In electrical theory, Ohm’s law states that I = V/R , where I is the current in amperes, V is the electromotive force in volts, and R is the resistance in ohms. In a certain circuit V = 110 and R = 50 . If V and R are to be changed by the same numerical amount, what change in them will cause I to double?
A constant current transfers 10*10^14 electrons onto one plate of a capacitor in 3 minutes [min]. (a) What is the current, in units of amperes [A]? Express the answer using an appropriate SI prefix such that there are only 1, 2, or 3 digits shown to the left of the decimal. (b) If the capacitor has a capacitance of microfarads [F], what is the voltage in units of volts [V] across the capacitor?
Write an equation relating the ratio delta Vbat / Ibat to R1, R2, and R3, where R1, R2, and R3 are the resistances of 3 resistors in a parallel circuit.
You measure a voltage with a multimeter, and the digital display has a constant reading of 9.0 V that does not vary over time. Which value is most reasonable to report as the random uncertainty on the measurement?
Give me additional examples of values with infinite significant figures. According to our handouts, here is one of the examples: 3000 chocolate Bars which are considered countable numbers. Moreover, the final zeroes in a whole number are significant IF the unit of quantity is measurable like mass, temperature, length, current etc. Therefore, even the trailing numbers are counted as significant. Example: 40 kg (2 sig figs) & 1900 mm (4 sig figs). Give me more examples as well. Thank you!
A Blu-ray DVD has the same dimensions as the DVD described in the preceding problem, but it can store 25 gigabytes of information. If the width of each track of the Blu-ray DVD is 320 nm, what is the average bit length?
How long a tape does a police officer need to record a 3-minute confession at an operating speed of 6.5 inches per second?