(a)
Interpretation:
The relative error in the voltage reading if the internal resistance of the voltmeter was 4000 χ should be calculated.
Concept introduction:
The percentage relative loading error of the voltmeter Er =
VM = Voltage of the meter
VX = True voltage of the source
When resistors are in series, a voltage divider. V = V1 + V2 + V3
The current in a series circuit is everywhere the same. In other words, I = I1 = I2 = I3
The total resistance Rs of a series circuit is equal to the sum of the resistances of the individual components. Rs = R1 + R2 + R3
Ohm’s law;
Ohm’s law describes the relationship among voltage, resistance, and current in a resistive series circuit.
V = IR
V = Voltage I = Current R = resistant
(b)
Interpretation:
The relative error in the voltage reading if the internal resistance of the voltmeter was 80.0 kχ should be calculated.
Concept introduction:
The percentage relative loading error of the voltmeter E r =
VM = Voltage of the meter
VX = True voltage of the source
When resistors are in series, a voltage divider. V = V1 + V2 + V3
The current in a series circuit is everywhere the same. In other words, I = I1 = I2 = I3
The total resistance Rs of a series circuit is equal to the sum of the resistances of the individual components. Rs = R1 + R2 + R3
Ohm’s law;
Ohm’s law describes the relationship among voltage, resistance, and current in a resistive series circuit.
V = IR
V = Voltage I = Current R = resistant
(c)
Interpretation:
The relative error in the voltage reading if the internal resistance of the voltmeter was 1.00 Mχ should be calculated.
Concept introduction:
The percentage relative loading error of the voltmeter E r =
VM = Voltage of the meter
VX = True voltage of the source
When resistors are in series, a voltage divider. V = V1 + V2 + V3
The current in a series circuit is everywhere the same. In other words, I = I1 = I2 = I3
The total resistance Rs of a series circuit is equal to the sum of the resistances of the individual components. Rs = R1 + R2 + R3
Ohm’s law;
Ohm’s law describes the relationship among voltage, resistance, and current in a resistive series circuit.
V = IR
V = Voltage I = Current R = resistant
Trending nowThis is a popular solution!
Chapter 2 Solutions
Principles of Instrumental Analysis
- An air-gap parallel plate capacitor whose plates have an area of A=0,38m² are separated by a distance d=0,61m and are connected to a battery of V₁ = 1,8 V. The space between the parallel plates is partially filled (x=0,26m) with some material of dielectric constant K=4,56. Find the electric potential energy stored in the capacitor in terms of permitivity of free-space €0. Express your answer using 2 decimal places.arrow_forward-1! The concentrations of three dilute solutions of sodium acetate were measured in a con- ductance cell in which the parallel electrodes were 1 cm in area and 0.25 cm apart. Resistances of 274,700, 91,000 and 18,320 ohms were determined for the three solu- tions. Calculate the normality of each solution. T = 25°C.arrow_forwardwhen voltage is 12v, current (I) is 6A, then resistance (R) in the circuit will be 20. If voltage of same circuit is increased from 12v to 15v then resistance of that circuit will be decreased. Select one: O True O Falsearrow_forward
- A current of 21.0 mA is maintained in a single circular loop of 1.40 m circumference. A magnetic field of 0.520 T is directed parallel to the plane of the loop. (a) Calculate the magnetic moment of the loop. mA. m² (b) What is the magnitude of the torque exerted by the magnetic field on the loop? Submit Answer mN m .arrow_forward2. Make a graph of the following data points. Is the relationship linear? If so, find the slope and y-intercept. Are the variables directly proportional? voltage (V) 1.0 1.5 2.0 mono 2.5 3.0 3.5 4.0 current (A) 3.45 x 10-³ 5.02 x 10-3 6.88 x 10-3 8.60 x 10-3 1.01 x 10-2 1.22 x 10-2 1.36 x 10-2 Linear? Slope Y-Intercept Directly proportional?arrow_forwardA coil with 193 turns has a magnetic flux of 37.3 nT-m² through each turn when the current is 1.90 mA. (a) What is the inductance of the coil? What are the (b) inductance and (c) flux through each turn when the current is increased to 3.53 mA? (d) What is the maximum emf & across the coil when the current through it is given by i = (2.72 mA)cos(wt), where w = 205 rad/s? (a) Number 3.788894737 Units mH (b) Number 3.788894737 Units mH (c) Number i 6.929947369 Units nWb (d) Number i 2.112687705 Units Varrow_forward
- The resistance of a 0.008 mol dm-³ solution of NaCl (aq) at 300 K was found to be 2.75 x 10³ . In a separate experiment, using the same conductivity cell, the resistance for a 0.1 mol dm-³ KCI aqueous solution was determined as 125.6 Q. Given that the conductivity of 0.1 mol dm-³ KCl aqueous solution at 300 K is 0.01302 S cm-1, calculate the molar conductivity of the NaCl aqueous solution.arrow_forwardThe resistance of a decinormal solution of a salt occupying a volume between Pt electrodes is 1.80 cm apart and 5.4 cm2 in area was found to be 32 ohms. Calculate the equivalent conductance of the solution.arrow_forwardThe Ksp of CuCl is 1.7 × 10-7. Part A Find Ecell for the cell: Cu(s) | CuCl(s) | CI (aq, 0.40 mol L-1) || Cu* (aq, 0.30 mol L-1) | Cu(s) Express your answer to two significant figures and include the appropriate units. ? Ecell = V Submit Previous Answers Request Answer X Incorrect; Try Againarrow_forward
- A typical exchange-current density, that for H+ discharge at platinum, is 0.79 mA cm−2 at 25 °C. Use the Butler–Volmer equation to calculate the current density at an electrode when its overpotential is (a) 10 mV, (b) 100 mV, (c) −5.0 V. Take α = 0.5.arrow_forward4. What is the capacitance of an empty parallel-plate capacitor with metal plates that each have an area of 1.00m², separated by 1.00 mm?arrow_forwardIn dielectric isolation, a layer of solid dielectric such as SiO2 or ruby completely surrounds each component thereby producing isolation both electrically and mechanically electrically only both electrically and physically mechanically onlyarrow_forward
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning