You bought a 28.0 V battery, 20.0 Q, 64.0 Q, and 103.0 Q resistors. You decide to connect them in parallel and wish to calculate the current (in A) through each resistor and power(in W) dissipated by each resistor. (a) Calculate the equivalent resistance in the parallel circuit. Reqv %3D (b) Calculate the currents (in A) and the power (in W)for each resistor. I20.00 = A P20.0 0 W I64.0 0 A !! P64.0 0 =. W I103.0 Q P103.0 0

Three 7.50 Ω resistors are connected in series to a 22.0 V battery. What is the equivalent resistance (in Ω) of the circuit?   What is the current (in A) in each resistor?   (b) Three other 7.50 Ω resistors are all connected in parallel across a second 22.0 V battery. What is the equivalent resistance (in Ω) of this circuit?   What is the current (in A) in each resistor in this circuit?

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a) What is the terminal voltage (in V) of a large 1.35 V carbon-zinc dry cell used in a physics lab to supply 1.80 A to a circuit, if the cell's internal resistance is 0.300 Ω?  b) How much electrical power (in W) does the cell produce? and c) What power (in W) goes to its load?

Two resistors are connected in series in a circuit with a battery. The electromotive force (emf) of the battery is 3.0 volts. The resistances are 0.40 ohms and 1.85 ohms. (a) Determine the current I. Hint: The same current flows through both resistors. The voltage drop across the two resistors, i.e. IR₁ ✈ IR₂, is equal to the emf. (d) Determine the power in the first resistor. 1.78 W (e) Determine the power in the second resistor. 2.49 W

The capacitor shown below has an initial voltage of 0.15 V before the switch is closed. The resistance is 8.5 x 106 ohms and the capacitance is 2.0 microfarads. How long after the switch is closed in seconds does it take for the voltage across the resistor to drop to 0.083 V? R CH B A D

Consider the three resistors R1 = 12 Ω, R2 = 44 Ω, and R3 = 88 Ω in the configuration shown in the figure. A potential difference ΔV = 3.5 V is applied between A and B. A) Calculate the numerical value of the total resistance R of this circuit, in ohms. B) Calculate the numerical value of the current I traveling from A to B, in amperes. C) Calculate the numerical value of I2  traveling through the resistor R2, in amperes. D) Calculate the numerical value of I3 traveling through the resistor R3, in amperes.

(a) Three 5.30 Ω resistors are connected in series to a 20.0 V battery. What is the equivalent resistance (in Ω) of the circuit?   What is the current (in A) in each resistor?   (b) Three other 5.30 Ω resistors are all connected in parallel across a second 20.0 V battery. What is the equivalent resistance (in Ω) of this circuit?   What is the current (in A) in each resistor in this circuit?