Problem # 1 (30 points): Consider the circuit shown below. (a) Find h, 12, Is, l4, and Is. (b) Find the total power supplied by the voltage sources. (c) Find the total power dissipated by the resistors. R4 -20 V 12V R2 3R3 2 2 3

If the battery in the circuit below is 10.44V, resistor R₁=72.74, and resistor R₂-17.330, what is the magnitude of the potential drop across resistor R₂? Please give your answer in units of Volts (V). R₂ R₁ A I B E Note: It is understood that the unit of your answer is in Volts (V), however do not explicitly include units in your answer. Enter only a number. If you do enter a unit, your answer will be counted wrong.

The circuit consists of a battery (V0 = 6.00 V) and five resistors (R1 = 611 Ohms, R2 = 482 Ohms, R3 = 163 Ohms, R4 = 734 Ohms, and R5 = 365 Ohms). What is the current for point D, point B, and point F?

If your cell phone has a battery that can hold X milliampere-hours of charge, how long will the phone continuously operate if it draws 3.5 volts? If necessary, realistically estimate the wattage at which your phone operates – cite any references you use. Show your calculations.

The resistors network shown below. Take R1 = 12 Ω,   R2 = 4 Ω,  R3 = 1 Ω,  R4  =  6 Ω,  R5  =  3 Ω and ε = 36 V. The equivalent resistance (Req) and the current through R2 (I2), (Req, I2) is A. (28 Ω, 1.3 A)  B. (6 Ω, 4.5 A)   C.(28 Ω, 1.0 A)  D.(4 Ω, 2.0 A)   E.(6 Ω, 6.0 A)  F.(4 Ω, 1.0 A)

Use the worked example above to help you solve this problem. An uncharged capacitor and a resistor are connected in series to a battery, as shown in the figure above. If E = 11.0 V, C = 5.50 μF, and R = 9.00 x 105 , find the following. (a) the time constant of the circuit (b) the maximum charge on the capacitor μC (c) the charge on the capacitor after 6.10 s μC S (d) the potential difference across the resistor after 6.10 s (e) the current in the resistor at that time A EXERCISE Use the values from PRACTICE IT to help you work this exercise. (a) Find the charge on the capacitor after 2.20 s have elapsed. Q = C (b) Find the magnitude of the potential difference across the capacitor after 2.20 s. AVC V = R HINTS: GETTING STARTED 1 I'M STUCK! (c) Find the magnitude of the potential difference across the resistor at that same time. AV V =

ε = 19 V battery with an internal resistance of r= 0.8 Ω is used to charge a C= 0.5 µF capacitor through a R = 8 Ω resistor. Find the initial current drawn from the battery.  (Your result must be in Amperes.  Include 2 digit after the decimal point and maximum of 5% of error is accepted in your answer.)

(1) A wire of resistivity p is stretched to double to its length. How does it affect the (a) Resistance (b) Resistivity? (2) Draw a circuit diagram which depicts two resistors R and Rconnected in parallel with the source, ammeter, voltmeter, key, and rheostat.

In the circuit shown below, R1=10 N, R2=32 Q. Ω. Find the equivalent resistance of this circuit: Reg = A. Find the current passing through the R1 resistor: I1= A. Find the current passing through the 5-2 resistor: 15= W. Find the power dissipated on the 5-0 resistor: P5= 10 Q 50 60 V + 10 Q R2 R1 R2

The figure below shows five resistors and two batteries connected in a circuit. What are the currents II2, and I3? (Consider the following values: R - 1.06 0, R2- 2.18 0, R3 - 3.12 0, R4- 4.16 0, R5 - 6.06 0. Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in webAssign. Indicate the direction with the sign of your answer.) Rs 120 V R: 9.00 V R R