A 120-W lightbulb connected to a 120-V source experiences a voltage surge that produces 138 V for a moment. By what percentage does its power output increase? Assume its resistance does not change.
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- The figure shows a simple RC circuit consisting of a 100.0-V battery in series with a 10.0-µF capacitor and a resistor. Initially, the switch S is open and the capacitor is uncharged. Two seconds after the switch is closed, the voltage across the resistor is 37 V. R S www 100.0 V T 3 0.0.37 Ω O 2.0 × 105Q Ο 2.70 Ω O 4.3 × 105Q O 5.0 × 104Q 10.0 uF Determine the numerical value of the resistance R.A small circuit consists of a resistor in series with a capacitor, as shown. The capacitor stores 79.2 mJ of energy after a ?bat=10.0 V battery has been connected to the circuit for a long time. Then, the capacitor discharges half of this stored energy in exactly1.28 s when the battery is removed and replaced by a ??=1.10×10^3 Ω load. Determine the value of the capacitance C1 in microfarads and resistance R1 in ohms. Please solve for both C1 and R1, thanks!A heart defibrillator being used on a patient has an RC time constant of 11 ms due to the resistance of the patient's body and the capacitance of the defibrillator. t = 11 ms C = 8.5 uF V = 14 kV (b) If the initial voltage is 14 kV, how long does it take to decline to 6.00 x 10^2 V in ms?
- 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?What is the smallest capacitor needed in a computer power supply in order to produce at least 4.05 V for 0.17 s after the power goes off? Assume that the resistance of all the components of the computer motherboard is 6 Ohms and that the capacitor and motherboard are powered with a 5-Volt power supply. For my answer I got .01706 F which was wrong, When I tried it again I got .03497 F which was also wrong. Can you please help?Your cell phone typically consumes about 410 mW of power when you text a friend. If the phone is operated using a lithium-ion battery with a voltage of 3.7 V, what is the current (in A) flowing through the cell-phone circuitry under these circumstances?
- An RC circuit has a 11 F capacitor and a 0.5 ogm resistor. If the initial charge stored on the capacitor is 20 C then at what time will the charge be 2.5 C?A heart defibrillator being used on a patient has an RC time constant of 11.0 ms due to the resistance of the patient and the capacitance of the defibrillator. If the defibrillator has an 7.25 µF capacitance, what is the resistance of the path through the patient? resistance: Ω If the initial voltage is 12.0 kV, how long does it take to decline to 323 V? time: Question Credit: OpenStax College PhysicsYou take a 6.34 V battery, a 226 kQ resistor, and an uncharged capacitor to put together a series circuit. You connect the battery and after 21.2 seconds the current in the circuit has fallen to 61% of its initial value. What is the value of the capacitor in microfarads (µF)? (Enter answer as an integer. Do not enter unit.) A Click Submit to complete this assessment. «< Question 2 of 2