2. For a real battery of emf E and an internal resistance of r, find the "load resistance" RL which maximizes the power delivered to that load.
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- Chapter 18 Homew ies and Due Dates > Chapter 18 Homework O Resources Give Up? Giant electric eels can deliver a shock of 470 V with up to 1.0 A of current for a brief time. A snorkeler in salt water has a body resistance of about 730 S2. A current of about 500 mA can cause heart fibrillation and death if it lasts too long. What is the maximum power Pmax a giant electric eel can deliver to its prey? Pmax = W If the snorkeler is struck by the eel, what current i will pass through her body? This current large enough to be dangerous. is not is What power Preceived uoes une snorkeler receive from the eel? W Preceived = about us careers privacy policy terms of use contact us help 87°F Rain coming End PolUn PaDnConsider the arrangement shown in the figure below where R = 7.00 , l = 1.10 m, and B = 2.25 T. HINT R xx xxxx x xx x x x x xxxxxx xx xxxxxx x x xxx x xxxxxx xxxx xx (b) What power (in W) is delivered to the resistor? W tea B Fapp (a) Apply the motional emf equation in combination with Ohm's law. (b) Recall the expressions for the power delivered to a resistor. (c) Apply the expression for the magnetic force on a current-carrying wire. (d) Recall the expression P = Fv. Click the hint button again to remove this hint. (a) At what constant speed (in m/s) should the bar be moved to produce a current of 1.40 A in the resistor? m/s (c) What magnetic force (in N) is exerted on the moving bar? (Enter the magnitude.) N (d) What instantaneous power (in W) is delivered by the force Fapp on the moving bar? WI have a computer that consumes a maximum of 15 W of power and I use a 5000 mAh battery. How long will it last at maximum power draw assuming it uses 20 V.
- What is the effective resistance of a car's starter motor when 150 A flows through it as the car battery applies 11.0 V to the motor?What is the maximum power in W that can be generated from an 18 V emf using any combination of a 6.0 Q resistor, and 9.0 Q resistor?2.000 3300 where R=1.800. A 1.000 4.000 8.000 An 14.8-V emf is connected to the terminals A and B. What is the current through the 1.80-02 resistor connected directly to point A?