In the figure circuit section AB absorbs energy at a rate of 53 W when current i = 0.76 A through it is in the indicated direction. Resistance R = 2.0 Q. (a) What is the potential difference between A and B? Emf deviceX lacks internal resistance. (b) What is its emf? A R
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- sia papa and surpres Combip a ant The 45-5 Lattery delivers 71w of power to the circuit. What is the resistance 2 of each resistor ? Ri J+ 45V ry. ww sy.A battery is recharged with a separate power supply. What emf should the battery be recharged to get a 0.75A current if the battery has a 1Ω internal resistance and is connected to a 2Ω resistor. b) If this power supply charges the battery for 10 minutes, how much energy goes into the battery? c) How much power is dissipated as thermal energy in the internal resistance?P Question 21
- Consider 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? Wmam/sir how do u draw an electrical circuit, with a voltometer and a anmeter.A 120 volt household circuit has a 20 amp circuit breaker (maximum). A 600-Watt heater and a 60 ohm light are connected to this source in parallel: A) What is the current through the 60 ohm light? B) What is the resistance of the 600-Watt heater? C) What is the minimum resistance R which could be used in parallel as a third appliance without tripping the 20 amp circuit breaker?