A battery with emf, ε = 15 V, has a terminal voltage of 12.8 V when it is delivering 18.5 W of power to a circuit resistor with unknown resistance, R. (a) Find the resistance of the unknown resistor. ΙΩ R = (b) What is the internal resistance of the battery? Ω r=
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- -5.00 Ω , R In the figure below, & = 3.00 V, & = 1.00 V, R1 R3 = 2.00 2, and both batteries are ideal. What is the rate at which energy is dissipated = 4.00 N, in (a) R1? (b) R2? (c) R3? What is the power of (d) battery 1? (e) battery 2? R2 R3 RA 12.0 μF capacitor is charged by a 13.0 V battery through a resistance R. The capacitor reaches a potential difference of 4.00 V at a time 3.00 s after charging begins. Find R. ΚΩA 597×10−6 F597×10−6 F capacitor is discharged through a resistor, whereby its potential difference decreases from its initial value of 86.9 V86.9 V to 26.1 V26.1 V in 4.11 s4.11 s. Find the resistance ?R of the resistor.
- In (Figure 1) the battery has emf 45.0 V and negligible internal resistance. R₁ = 7.00 2. The current through R₁ is 1.50 A and the current through R3 = 4.50 A. Figure ww R₁ www R₂ www- R₂ < 1 of 1 ▼ What is the resistance R₂? Express your answer with the appropriate units. R₂: Submit Part B R3 11 .0 Submit μA Value What is the resistance R3 ? Express your answer with the appropriate units. Request Answer HÅ Value Units Request Answer Units ?Three 100 resistors are connected as shown in the figure. The maximum power that can safely be delivered to any one resistor is 29.0 W. 100 Ω a 100 Ω ww 100 Ω (a) What is the maximum potential difference that can be applied to the terminals a and b? V (b) For the voltage determined in part (a), what is the power delivered to each resistor? resistor on the left W W resistor at the top of the loop resistor at the bottom of the loop W (c) What is the total power delivered to the combination of resistors? WYou charge an initially uncharged 72.9 mF capacitor through a 27.9 2 resistor by means of a 9.00 V battery having negligible internal resistance. Find the time constant t of the circuit. T = S What is the charge Q on the capacitor 1.71 time constants after the circuit is closed? Q = C What is the charge Qo after a long amount of time has passed? C
- In a heart pacemaker, a pulse is delivered to the heart 84 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 3.9 ✕ 106 Ω. One pulse is delivered every time the fully charged capacitor loses 63.2% of its original charge. What is the capacitance of the capacitor? FYou charge an initially uncharged 69.1 mF capacitor through a 24.9 2 resistor by means of a 9.00 V battery having negligible internal resistance. Find the time constant t of the circuit. What is the charge Q on the capacitor 1.25 time constants after the circuit is closed? What is the charge Qo after a long amount of time has passed? C QoA capacitor of 10.0 uF and a resistor of 130 OMEGA are quickly connected in series to a battery of 4.00 V. What is the charge Q on the capacitor 0.00100 s after theconnection is made?
- A battery has an emf of 15.0 V. The terminal voltage of the battery is 11.0 V when it is delivering 22.0 W of power to an external load resistor R. (a) What is the value of R? Ω (b) What is the internal resistance of the battery? ΩA battery has an emf of 15.0 V. The terminal voltage of the battery is 10.6 V when it is delivering 22.0 W of power to an external load resistor R. (a) What is the value of R? Ω (b) What is the internal resistance of the battery? ΩA 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?