A 33 V battery of negligible internal resistance is connected to a 47 kΩ and a 27 kΩ resistor in series.
a)What reading will a voltmeter, of internal resistance 97 kΩ , give when used to measure the voltage across the first resistor?
b)What is the percent inaccuracy due to meter resistance for each case?
c)What reading will a voltmeter, of internal resistance 97 kΩ , give when used to measure the voltage across the second resistor?
d)What is the percent inaccuracy due to meter resistance for each case?
A 33 V battery of negligible internal resistance is connected to a 47 kΩ and a...
A circuit consists of a series combination of 6.00-kΩ and 5.00-kΩ resistors connected across a 50.0-V battery having negligible internal resistance. You want to measure the true potential difference (that is, the potential difference without the meter present) across the 5.00-kΩresistor using a voltmeter having an internal resistance of 10.0 kΩ. You may want to review (Pages 858 - 862) . For related problemsolving tips and strategies, you may want to view a Video Solution of Measuring resistance. Part A...
A battery with E = 12.0 V and internal resistance r=1.2Ω is connected to two 8.5-kΩ resistors in series. An ammeter of internal resistance 0.30 Ωmeasures the current, and at the same time a voltmeter with internal resistance 17 kΩ measures the voltage across one of the 8.5-kΩ resistors in the circuit. What does the ammeter read? What does the voltmeter read? What is the % "error" from the current without meters? What is the % "error" from the voltage...
A resistor R is connected across a battery of negligible internal resistance. If the resistance of R is doubled, the current in R will be What?
When you connect an unknown resistor across the terminals of a 1.50 V AAA battery having negligible internal resistance, you measure a current of 17.2 mA flowing through it. What is the resistance of this resistor? If you now place the resistor across the terminals of a 12.4 V car battery having no internal resistance, how much current will flow? You now put the resistor across the terminals of an unknown battery of negligible internal resistance and measure a current of \(0.451\) A...
With the internal resistance of the battery set as close to 2 ohms as possible, which of the following voltages is closest to the voltage displayed by the voltmeter when the battery was connected to an external resistor? (Note: the voltmeter was connected across the battery).
To determine the internal
resistance of a battery, a pair of students use a high-impedance
DMM to measure the voltage across an external resistor (see
figure). When Rext=240 kΩ, they measure 9 V but, when Rext=2 Ω,
they measure 6.8 V. What is the internal resistance of the
battery?
FR
(a) A capacitor of capacitance 220 μF is connected in series with a 150 kΩ resistor, a switch and an ammeter. A d.c. power supply of negligible internal resistance is connected to the circuit as shown below 1 50 kΩ 220HF A stopclock is started and after 10 seconds the switch S is closed Ammeter readings are noted at regular intervals until a time of 80s is shown on the stopclock. The graph below shows how the current in the...
A 12.8 V car battery with negligible internal resistance is connected to a series combination of a 3.1 2 resistor that obeys Ohm's law and a thermistor that does not obey Ohm's law but instead has a current-voltage relationship V- al +BI2, with a 3.6 2 and B 1.4 /A Part A What is the current through the 3.1 2 resistor? Express your answer using two significant figures. ? A I- Submit Request Answer
Consider a circuit containing a 24 V battery and a 15 Ω resistor. We want to mesure the current in the circuit with an ammeter of internal resistance 3 mΩ and the voltage drop across the resistor with a voltmeter having an internal resistance of 100 kΩ. a. How should be the ammeter connected (series or parallel)? b. How should be the voltmeter connected (series or parallel)? c. Draw a schematic of the circuit d. Calculate the current across the...
Find the battery voltage.
E=?
Find the battery internal resistance.
R=?
An ammeter with resistance 1.42 Ω is connected momentarily across a battery, and the meter reads 9.78 A.When the measurement is repeated with a 2.11-2 meter, the reading is 7.41 A