When a camera flash goes off, the batteries immediately begin to recharge the flash's capacitor, which...
10) A camera flash consists of a 120 μF capacitor charged to 220V which discharges through a flashbulb with 5 Ω resistance. What is the time-constant τ of this RC circuit when the flash goes off? How much of the initial stored energy is discharged within 2T? What is the equation for the voltage drop across the capacitor vs. time during the discharge? Make a graph showing this voltage vs. time.
14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C) Megatron Inductor E) Transformer D) 23) Convert 6.8 x 10-5 W to the closest standard metric prefix. A) 68 °W B) 0.68 uW C) 680 uW D) 6.8 uw 24) Convert 3.95 x 10-4 A to the closest standard metric prefix. A) 3.95 mA 39.5 mA 0.395 mA D 395 mA Convert the following: 25) 2 x 10-3 Amp = A) 2 microamps 2...