A 12 V battery is connected across a 12 resistor. An ammeter with resistance 0.1 is inserted in the circuit, and a voltmeter with resistance 1.43 k is connected to measure the voltage across the resistor. Calculate what is the two instruments will read, and Calculate what each instrument will read if the other one is removed
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A 12 V battery is connected across a 12 resistor. An ammeter with resistance 0.1 is inserted in the circuit, and a voltmeter with resistance 1.43 k is connected to measure the voltage across the resistor. Calculate what is the two instruments will read, and Calculate what each instrument will read if the other one is removed
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- Consider the circuit below. R1=15 ohms, and R2= 20 ohms. Current in R2 is shown in the figure. COMPUTE for the total voltage delivered by the battery. Current 0.45 A 15.75 volts 18 volts 3.86 volts O 9 voltsA battery is connected across a light bulb with an internal resistance of 75 ohms. Using an ammeter, the current flowing in the circuit was measured to be 120mA. What is the voltage of the battery?When switch S in the figure is open, the voltmeter V of the battery reads 3.10 V. When the switch is closed, the voltmeter reading drops to 2.97 V , and the ammeter A reads 1.69 A . Assume that the two Part A meters are ideal, so they do not affect the circuit. (Figure 1) Find the emf E. Express your answer in volts to three significant digits. ? E = V Figure 1 of 1 Submit Request Answer V Part B Complete previous part(s) Part C Complete previous part(s) Provide Feedback A
- A simple circuit has a 9.0 V battery that powers the circuit shown above. The current shown on the ammeter is 2.0 A. Calculate the resistance of the resistor in the circuit.An electrical device draws 3.4 A (amps) when a voltmeter shows a voltage drop of 5.6 V (volts) across it. What is the electrical resistance of the device? Give your answer to the nearest tenth (0.1) ohm. Do NOT give units in the answer (since the units are already specified). Your Answer: AnswerResistor 1: 3.27 kilo ohms Resistor 2: 3.28 kilo ohms Resistor 3: 841 ohms Resistors 1, 2, and 3 are connected in series, measured a total resistance of 7.39 kilo ohms. Resistors 1, 2, and 3 are connected in parallel, measured a total resistance of 539 ohms. Calculate the expected resistance of each circuit and compare to the measured resistance. Is it different - if so, why?
- The voltage across the battery is 15 V, the voltage across the 10 Ω resistor is 3.1 V, and the voltage across the 20 Ω resistor is 5.6 V. What is the voltage across the light bulb, in Volts? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.Resistance of 3 and 6 ohms are connected in series with a battery consisting of dry cells of 1.5 voltage each. If the ammeter reads 0.5 ampere, What is the total potential difference supplied by the battery? How many dry cells are in the battery? Using the number of dry cells in b, the system was rearranged so that only 0.167 ampere was flowing through the circuit. Draw a diagram of the system.If Vs = 9 V, R1 = 33 2 and R2 = 82 02, what voltage would you expect to see displayed on a voltmeter (in V to 1 decimal place) connected as in the circuit shown below? You should assume that the voltmeter is displaying a positive value. Vs = R1 R2 V
- A 16 ohm and 20 ohm resistor are connected in parallel. A difference in potential of 40 V is applied to the combination. a) Compute the equivalent resistance of the parallel circuit. b) What is the total current in the circuit? c) What is the current in the 16 ohm resistor?The circuit below has a voltmeter that reads 6-V connected, in parallel, to resistor with unknown resistance R and an ammeter, connected in series with the same resistor, that has a reading of 3 mA. Calculate the resistance of resistor in ohms. V A R 3.00 kNUsing the multimeter, the measured voltage and current in a simple circuit (a resistor connected to a battery) are 8.3 V and 2.4 A, respectively. If the measured resistance of the resistor is 3.5 Ω, what is the percent difference (in %) between the computed and measured resistance?