A battery with a 0.138 Ω internal resistance supplies 14.7 W of total power with a 8.41 V terminal voltage. Determine the current I (in A) and the power PR (in W) delivered to the load resistor. (Enter your answers to at least three significant figures.) (a) the current I (b) the power PR
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- A 12.0-V emf automobile battery has a terminal voltage of 16.0 V when being charged by a current of 10.0 A. (a) What is the battery’s internal resistance? (b) What power is dissipated inside the battery? (c) At what rate (in °C/min ) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.300 kcal/kg • °C, assuming no heat escapes?A battery with a 0.143 Ω internal resistance supplies 17.7 W of total power with a 8.61 V terminal voltage. Determine the current I (in A) and the power PR (in W) delivered to the load resistor. (Enter your answers to at least three significant figures.) a) the current (I) b) the power (PR)The RC charging circuit in a camera flash unit has a voltage source of 295 V and a capacitance of 126 µF. HINT Apply the expression q = Q(1 - e-t/RC). Click the hint button again to remove this hint. (a) Find its resistance R (in ohms) if the capacitor charges to 90.0% of its final value in 14.2 s. (b) Find the average current (in A) delivered to the flash bulb if the capacitor discharges 90.0% of its full charge in 1.14 ms. A
- In the circuit diagram R1 = 5R and R2 = 15R, where R = 14 Ω. The power dissipated in resistor 2 is P = 1.6 W. Part (a) What is the voltage across the battery in volts? Part (b) How much power, Ps, is the source supplying, in watts?A battery with a 0.128 internal resistance supplies 14.2 W of total power with a 8.81 V terminal voltage. Determine the current I (in A) and the power PR (in W) delivered to the load resistor. (Enter your answers to at least three significant figures.) HINT (a) the current I 1.612 XA (b) the power PR 13.86 W(a) What is the terminal voltage (in V) of a large 1.90 V carbon-zinc dry cell used in a physics lab to supply 1.20 A to a circuit, if the cell's internal resistance is 0.200 Q? V (b) How much electrical power (in W) does the cell produce? W (c) What power (in W) goes to its load? W
- A 11.0 kΩ resistor and a capacitor are connected in series and then a 25.0 V potential difference is suddenly applied across them. The potential difference across the capacitor rises to 4.0 V in 3.70 μs. Calculate the time constant of the circuit. (Your result must be in units of μs's. Include 2 digit after the decimal point and maximum of 5% of error is accepted in your answer.)The RC charging circuit in a camera flash unit has a voltage source of 285 V and a capacitance of 131 µF. HINT (a) Find its resistance R (in ohms) if the capacitor charges to 90.0% of its final value in 13.2 s. Ω (b) Find the average current (in A) delivered to the flash bulb if the capacitor discharges 90.0% of its full charge in 1.14 ms. AA 12.0 V emf automobile battery has a terminal voltage of 16.8 V when being charged by a current of 11.0 A. (a) What is the battery's internal resistance (in N)? Ω (b) What power (in W) is dissipated inside the battery? W (c) At what rate (in °C/min) will its temperature increase if its mass is 20.0 kg and it has a specific heat of 0.380 kcal/(kg · °C), assuming no heat escapes? °C/min
- In a circuit, all the power delivered by the battery must be dissipated by the elements to the circuit. This is simply a statement of the conservation of energy. How much energy dissipated depends on the resistance of the element and the voltage across the resistor, or the current through it. The relevant equations for the problems are as follows. For a circuit element, the power dissipated (or generated) is P = IV, where Vand I are the voltage across and current through a circuit element. We know that a resistor obeys OhmA ¢A^A^'s Law V=IR, which means that for a resistor, the power dissipated is P = I*R = V²/R. Consider the following two circuits with identical batteries and re- sistors. А В C R R R RS R If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit B? If the power dissipated by the resistor in circuit A is P, what is the power dissipated by one resistor in circuit C?A 6.50 μF capacitor that is initially uncharged is connected in series with a 4300 resistor and a 507 V emf source with negligible internal resistance. Just after the circuit is completed, what is the voltage drop across the capacitor? Express your answer in volts. ΠΑΣ Vc = Submit ▾ Part B VR = Submit Just after the circuit is completed, what is the voltage drop across the resistor? Express your answer in volts. IΫΠΙΑΣΦ ▾ Part C Qo= Submit ▾ Part D IR= Submit ▾ Part E Just after the circuit is completed, what is the charge on the capacitor? Express your answer in coulombs. [Π]ΑΣΦ + Vc, VR= Submit ▾ Part F + Request Answer Q= Submit • ▾ Part G Request Answer Just after the circuit is completed, what is the current through the resistor? Express your answer in amperes. ΠΠ ΑΣΦ IR = Request Answer ← Request Answer ¹ [? → A long time after the circuit is completed (after many time constants), what are the voltage drop across the capacitor and across the resistor? Express your answers in…Each of the six real batteries in the figure has an emf of 18.6 V and a resistance of 3.89 0. (a) What is the current through the (external) resistance R=3.5102? (b) What is the potential difference across each battery? (c) What is the power of each battery? (d) At what rate does each battery transfer energy to internal thermal energy? (a) Number IM (b) Number i MI (c) Number i IM (d) Number i Units A Units V Units W Units W R > <
