Questions from College Physics

Q: The circuit in Figure P18.55 has been connected for several

The circuit in Figure P18.55 has been connected for several seconds. Find the current (a) In the 4.00 - V battery, (b) In the 3.00 - Ω resistor, (c) In the 8.00 - V battery, and (d) In the...

Q: Figure P18.19 shows a Wheatstone bridge, a circuit used

Figure P18.19 shows a Wheatstone bridge, a circuit used to precisely measure an unknown resistance R by varying Rvar until the ammeter reads zero current and the bridge is said to be â€...

Q: For the circuit shown in Figure P18.20, calculate

For the circuit shown in Figure P18.20, calculate (a) The current in the 2.00 - Ω resistor and (b) The potential difference between points a and b, ΔV = Vb –...

Q: Taking R = 1.00 kΩ and ε = 250.

Taking R = 1.00 kΩ and ε = 250. V in Figure P18.21, determine the direction and magnitude of the current in the horizontal wire between a and e. Figure P18.21:

Q: In the circuit of Figure P18.22, the current I1

In the circuit of Figure P18.22, the current I1 is 3.0 A and the values of ε and R are unknown. What are the currents I2 and I3? Figure P18.22:

Q: In the circuit of Figure P18.23, determine (

In the circuit of Figure P18.23, determine (a) The current in each resistor, (b) The potential difference across the 2.00 x 102 - Ω resistor, and (c) The power delivered by each battery....

Q: Four resistors are connected to a battery with a terminal voltage of

Four resistors are connected to a battery with a terminal voltage of 12 V, as shown in Figure P18.24. (a) How would you reduce the circuit to an equivalent single resistor connected to the battery? Us...

Q: Using Kirchhoff’s rules, (a) Find the current in

Using Kirchhoff’s rules, (a) Find the current in each resistor shown in Figure P18.25 and (b) Find the potential difference between points c and f. Figure P18.25:

Q: Figure P18.26 shows a voltage divider, a circuit used

Figure P18.26 shows a voltage divider, a circuit used to obtain a desired voltage ΔVout from a source voltage ε. Determine the required value of R2 if ε = 5.00 V,...

Q: (a) Can the circuit shown in Figure P18.27

(a) Can the circuit shown in Figure P18.27 be reduced to a single resistor connected to the batteries? Explain. (b) Calculate each of the unknown currents I1, I2, and I3 for the circuit. Figure P18.2...