A battery with an emf of 9.75 V is connected to a 67.0 Ω resistor. The current through the battery is 115 mA. What is the battery's internal resistance (in Ω)?
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A battery with an emf of 9.75 V is connected to a 67.0 Ω resistor. The...
A real battery is not just an emf. We can model a real 1.5 V battery as a 1.5 V emf in series with a resistor known as the "internal resistance", as shown in the figure(Figure 1) . A typical battery has 1.0 Ω internal resistance due to imperfections that limit current through the battery. When there's no current through the battery, and thus no voltage drop across the internal resistance, the potential difference between its terminals is 1.5 V,...
An ideal voltmeter V is connected to a 1.5 Ω resistor and a battery with emf 4.7 V and internal resistance 0.5 Ω as shown in the figure. What is the reading on the voltmeter? (Give your answer in decimal using V as unit)
A 50-Ω resistor is connected across a battery, and a 26-mA current flows. When the 50-Ω resistor is replaced with a 23-Ω resistor, a 43-mA current flows. A) What is the battery's voltage? B) What is internal resistance? I need the correct answers to 2 significant figures.
1. A battery having an emf of 9.34 V delivers 116 mA when connected to a 67.5 Ω load. Determine the internal resistance of the battery. Ω 2.Three 9.4 Ω resistors are connected in series with a 19.0 V battery. Find the following. (a) the equivalent resistance of the circuit Ω (b) the current in each resistor A (c) Repeat for the case in which all three resistors are connected in parallel across the battery. equivalent resistance Ω current in...
A battery with an emf of 12.00 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 11.70 V and the current is 0.20 A.A) What is the value of the external resistor R?B) What is the internal resistance r of the battery?C) What is the energy dissipated in the battery's internal resistance in 3.7 minutes?D) When a second identical battery is added in series and the external resistor is R = 28 Ohms...
A battery with an emf of 12.00 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 11.70 V and the current is 0.120 A. The value of the external resistor is 97.5 ohms and the value of the internal resistor is 2.50 ohms. What is the energy dissipated in the battery's internal resistance in 4.20 minutes?
A battery with an emf of 3.00 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 2.90 V and the current is 0.16 A. 1. What is the value of the external resistor R? 2. What is the internal resistance r of the battery? 3. What is the energy dissipated in the battery's internal resistance in 1.6 minutes? 4. When a second identical battery is added in series and the external resistor is...
(a) Find the current in a 8.80 Ω resistor connected to a battery that has an internal resistance of 0.20 Ω if the voltage across the battery (the terminal voltage) is 8.05 V. A (b) What is the emf of the battery? V
A resistor with resistance R is connected to a battery that has emf 14.0 V and internal resistance r = 0.410 Ω. For what two values of R will the power dissipated in the resistor be 81.0W? (There is two answers)
1)A 165 μF capacitor charged initially to 0.31 mC is connected across a resistor, and 2.0 s later its charge has dropped to 0.20 mC . Find the resistance. 2) A 380 Ω resistor and a 510 Ω resistor are in series. Part A When this combination is connected across a 12-V battery, the current is When this combination is connected across a 12- battery, the current is 22 mA . 130 mA . 13 mA . 37 mA ....