A battery having an emf of 9.40 V delivers 100 mA when connected to a 72.0 load. Determine the internal resistance of the battery.
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A battery having an emf of 9.40 V delivers 100 mA when connected to a 72.0 load. Determine the internal resistance of the battery.
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- An automobile battery has an emf of 12.6 V and an internal resistance of 0.0500 2. The headlights together have an equivalent resistance of 6.70 2 (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? (Enter your answer to at least two decimal places.) 12.46 X V (b) What is the potential difference across the headlight bulbs when the starter motor is operated, with 35.0 A of current in the motor? (Enter your answer to at least two decimal places.) 10.79 X VA battery having an emf of 9.68 V delivers 113 mA when connected to a 61.0 Ω load. Determine the internal resistance of the battery.A battery has an emf of 15.0 V. The terminal voltage of the battery is 10.8 V when it is delivering 26.0 W of power to an external load resistor R. (a) What is the value of R? (b) What is the internal resistance of the battery?
- An initially uncharged 4.15 µF capacitor and a 7.51 k2 resistor are connected in series to a 1.50 V battery that has negligible internal resistance. What is the initial current in the circuit, expressed in milliamperes? initial current: Calculate the circuit's time constant in milliseconds. time constant: ms How much time, in milliseconds, must elapse from the closing of the circuit for the current to decrease to 3.83% of its initial value? elapsed time: msThe circuit below contains two real batteries, each having significant internal resistance. Battery #1 has an EMF of 6.00 V and an internal resistance of 1.00 ohm. Battery #2 has an EMF of 12.00 V and an internal resistance of 2.00 ohms. These two batteries are connected in series with two resistors R, = 6.00 ohms and R,= 3.00 ohms. ri d (6.00,V) (1.00 0) R1 (6.00 N) R2 (3.00 N) a r2 E2 (2.00 Q) (12.00 V) 18. The current in the 12.00 Volt battery is equal to C. 0.500 A. A. 0.750 A. B. 1.00 A. D. 2.00 A. E. 1.50 A. 19. The potential difference across the terminals of battery #1 from point C to point d is equal to C. 7.00 V. A. 5.50 V. B. 6.00 V. D. 5.00 V. E. 6.50 V. 20. The potential difference across the terminals of battery #2 from point a to point b is equal to C. 13.00 V. A. 14.00 V. В. 10.00 V. D. 11.0 V. E. 12.00 V.a 555 uF capacitor is discharged through a resistor. The potential difference across the capacito decreases from its initial value of 96.5 V to 10.9 V in 3.33 s. Find the resistance of the resistor