Three 240-$\Omega$ resistors can be connected together in four different ways, making combinations of series and/or parallel circuits. What are these four ways and what is the net resistance in each case?

What is the internal resistance of a 12.0-V car battery whose terminal voltage drops to 8.8 V when the starter draws 60 A? What is the resistance of the starter?

A 1.5-V dry cell can be tested by connecting it to a low-resistance ammeter. It should be able to supply at least $25~\mathrm{A}$. What is the internal resistance of the cell in this case?

Write general outer electron configurations ($ns^x \ np^y$) for groups 6A and 7A in the periodic table. The electron affinity of each group 7A element is more negative than that of each corresponding group 6A element . Use the electron configurations to explain why this is so.

When a 12V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.

A 30.0-cm long solenoid 1.25 cm in diameter is to produce a field of 0.385 T at its center. How much current should the solenoid carry if it has 975 turns of the wire?

A circular loop of wire has an area of $0.30 \mathrm { m } ^ { 2 }$. It is tilted by $45 ^ { \circ }$ with respect to a uniform 0.40 T magnetic field. What is the magnetic flux through the loop? A. $0.085 \mathrm { T } \cdot \mathrm { m } ^ { 2 }$ B. $0.12 \mathrm { T } \cdot \mathrm { m } ^ { 2 }$ C. $0.38 \mathrm { T } \cdot \mathrm { m } ^ { 2 }$ D. $0.75 \mathrm { T } \cdot \mathrm { m } ^ { 2 }$ E. $1.3 \mathrm { T } \cdot \mathrm { m } ^ { 2 }$

A long, straight, horizontal wire carries a left-to-right current of 20 A. If the wire is placed in a uniform magnetic field of magnitude $4.0 \times 10 ^ { - 5 } \mathrm { T }$ that is directed vertically downward, what is the resultant magnitude of the magnetic field 20 cm above the wire? 20 cm below the wire?

Household outlets are often double outlets. Are these connected in series or parallel? How do you know?

What is the potential difference across C2 when C1 = 5.0 μF, C2 = 15 μF, C3 = 30 μF, and V0 = 24V?

The circuit consists of a battery with an EMF of 2.5 V and three capacitors connected in parallel where C1=2.0 μF, C2=4.0 μF, and C3=6.0 μF. What charge is stored in the capacitors?

A heater coil connected to a $240 \mathrm{~V}_{\text {rms }}$ ac line has a resistance of $38 \Omega$. What are the maximum and minimum values of the instantaneous power?

In the given figure, V=12 V, C1=C5=C6=6.0 microfarad, and C2=C3=C4=4.0 microfarad. What are the charge on capacitor 4 ?

A milliammeter reads 10 mA full scale. It consists of a 0.20-$\Omega$ resistor in parallel with a 30-$\Omega$ galvanometer. How can you change this ammeter to a voltmeter giving a full-scale reading of $10 ~\mathrm{V}$ without taking the ammeter apart? What will be the sensitivity $(\Omega/\mathrm{V})$ of your voltmeter?