Question: a 4 k resistor with a tolerance of ±2% carries a current of 2 A. The current was measured by an analog ammeter with a range of 0 to 4 A with a quoted inaccuracy of 16% of the full scale. The likely maximum error in calculating the power dissipated in the resistor (P = 12R) would be: elect one: D a. 0.0632 Db. 0.24 D c. 0.0872 d. 0.34 B 4:36 PM

Problem 10: (8% of Assignment Value) A 420 resistor, an uncharged 1.35 µF capacitor, and a battery with a 6.14 V potential difference are connected in series. Randomized Variables R = 420 Q C = 1.35 μF AV = 6.14 V Part (a) What is the initial current in mA, immediately after they are connected? I = || Hints: sin() cos() tan() πο 7 8 9 HOME cotan() asin() acos() E Λ 4 5 6 atan() acotan() sinh() * 1 2 -> cosh() tanh() cotanh() + - 0 END Degrees Radians ✓ BACKSPACE Submit Hint Feedback I give up! 2 Submission(s) Remaining Feedback: Part (b) What is the RC time constant in s? Part (c) What is the current, one time constant after they are connected, in milliamps? Part (d) What is the voltage on the capacitor after one time constant in V? DEL CLEAR

A copper wire of resistance R = 24 Q is connected to a source of voltage that increases with time as AV(t) = Vo(1 - e-at), where Vo = 130 V and a = 0.62 s1. P=Vo²/R (1-e¯at)2 Calculate the energy dissipated by the resistor in joules during the first t = 1.75 s.

Problem: In a test to determine the resistance of a single-core cable, an applied voltage   2.5 V was necessary to produce a current of 2A in it at 15° C.   of   (a) Calculate the cable resistance at 55° C if the temperature coefficient of resistance of copper at 0°C is 1/235 per" C.   (b) If the cable under working conditions carries a current of 10A at this temperature, calculate the power dissipated in the cable.