Questions from College Physics

Q: The resistance between terminals a and b in Figure P18.13

The resistance between terminals a and b in Figure P18.13 is 75 Ω. If the resistors labeled R have the same value, determine R. Figure P18.13:

Q: A battery with ε = 6.00 V and no internal

A battery with ε = 6.00 V and no internal resistance supplies current to the circuit shown in Figure P18.14. When the double - throw switch S is open as shown in the figure, the current i...

Q: (a) Find the current in an 8.00 -

(a) Find the current in an 8.00 - Ω resistor connected to a battery that has an internal resistance of 0.15 V if the voltage across the battery (the terminal voltage) is 9.00 V. (b) What is the emf of...

Q: A battery with an emf of 12.0 V has a

A battery with an emf of 12.0 V has a terminal voltage of 11.5 V when the current is 3.00 A. (a) Calculate the battery’s internal resistance r. (b) Find the load resistance R.

Q: A battery with a 0.100 - Ω internal resistance supplies

A battery with a 0.100 - Ω internal resistance supplies 15.0 W of total power with a 9.00 V terminal voltage. Determine (a) The current I and (b) The power delivered to the load resistor.

Q: Two resistors, R1 and R2, are connected in series.

Two resistors, R1 and R2, are connected in series. (a) If R1 = 2.00 Ω and R2 = 4.00 Ω, calculate the single resistance equivalent to the series combination. (b) Repeat the calculation for a parallel c...

Q: Three 9.0 - Ω resistors are connected in series with

Three 9.0 - Ω resistors are connected in series with a 12 - V battery. Find (a) The equivalent resistance of the circuit and (b) The current in each resistor. (c) Repeat for the case in which all thre...

Q: (a) Find the equivalent resistance between points a and b

(a) Find the equivalent resistance between points a and b in Figure P18.7. (b) Calculate the current in each resistor if a potential difference of 34.0 V is applied between points a and b. Figure P18...

Q: Suppose 9.30 x 105 J of energy are transferred to

Suppose 9.30 x 105 J of energy are transferred to 2.00 kg of ice at 0°C. (a) Calculate the energy required to melt all the ice into liquid water. (b) How much energy remains to raise the temperature o...

Q: Consider the combination of resistors shown in Figure P18.8.

Consider the combination of resistors shown in Figure P18.8. a) Find the equivalent resistance between point a and b. (b) If a voltage of 35.0 V is applied between points a and b, find the current in...