(a) What is the resistance of a lightbulb that uses an average power of 40.0 W when connected to a 60.0-Hz power source having a maximum voltage of 170 V? _________ Ω (b) What is the resistance of a 60.0-W lightbulb? (Assume the lightbulb uses an average power of 60.0 W when connected to a power source having a maximum voltage of 170 V.)

A 530-Ω resistor, an uncharged 3.40-μF capacitor, and a 4.80-V emf source are connected in series. What is the instantaneous power to the capacitor after 3 time constants? Calculate your answer in the units of milli-watts (mW). Hint: Instantaneous power is the product of instantaneous potential drop and instantaneous current. Write your answer in decimal form with three digits to the right of the decimal point (e.g. 5.389); do not write any units.

(a) What is the resistance of a lightbulb that uses an average power of 85.0 W when connected to a 60.0 Hz power source having a maximum voltage of 190 V? Ω (b) What is the resistance of a 110 W bulb? Ω

A capacitor, C, is (fully) charged by connecting it to a 7 Volt EMF and then is allowed to dischargethrough a 2 Ω resistor as shown in the Figure. What is the current, I, in the circuit (in A) when thestored energy in the capacitor has dropped to 30% of its initial value?

Consider the arrangement shown in the figure below where R = 8.50 0, l=1.40 m, and B = 2.75 T. HINT www xxxxxx * ****** ****** W ****** xxx x xxx (b) What power (in W) is delivered to the resistor? W ****** ****** 15₂ (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 app (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 F on the moving bar? app

In the figure, these three resistors are connected to a voltage source so that R2 = 4.25 Ω and R3 = 9.5 Ω are in parallel with one another and that combination is in series with R1 = 1.5 Ω. Answer both questions below: A) Calculate the power being dissipated by the third resistor R3, in watts.  B)  Find the total power supplied by the source, in watts.

For the circuit in the figure below, find the average power, the maximum instantaneous power, and the minimum instantaneous power delivered to the capacitor. Use f = 500 Hz, Vmax=20 V, and C = 1.4 μF. VAC (a) the average power W (b) the maximum instantaneous power w (c) the minimum instantaneous power w

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 Physics

Consider a series RC circuit as in the figure below for which R = 8.00 MQ, C = 1.00 µF, and E = 27.0 V. R (a) Find the time constant of the circuit. (b) What is the maximum charge on the capacitor after the switch is thrown closed? (c) Find the current in the resistor 10.0 s after the switch is closed. HA