Problem 8.1CYU: Check Your Understanding The capacitance of a parallel-plate capacitor is 2.0 pF. If the area of... Problem 8.2CYU: Check Your Understanding Verify that /V and e0/d have the same physical units. Problem 8.3CYU: Check Your Understanding The radius of the outer sphere of a spherical capacitor is five times the... Problem 8.4CYU: Check Your Understanding When a cylindrical capacitor is given a charge of 0.500 nC, a potential... Problem 8.5CYU: Check Your Understanding Determine the net capacitance C of each network of capacitors shown below.... Problem 8.6CYU: Check Your Understanding The potential difference across a 5.0-pF capacitor is 0.40 V. (a) What is... Problem 8.7CYU: Check Your Understanding When a dielectric is inserted into an isolated and charged capacitor, the... Problem 8.8CYU: Check Your Understanding Continuing with Example 8.12, show that when the battery is connected... Problem 8.9CYU: Check Your Understanding Repeat the calculations of Example 8.10 for the case in which the battery... Problem 1CQ: Does the capacitance of a device depend on the applied voltage? Does the capacitance of a device... Problem 2CQ: Would you place the plates of a parallel-plate capacitor closer together or farther apart to... Problem 3CQ: The value of the capacitance is zero if the plates are not charged. True or false? Problem 4CQ: If the plates of a capacitor have different areas, will they acquire the same charge when the... Problem 5CQ: Does the capacitance of a spherical capacitor depend on which sphere is charged positively or... Problem 6CQ: If you wish to store a large amount of charge in a capacitor bank, would you connect capacitors in... Problem 7CQ: What is the maximum capacitance you can get by connecting three 1.0F capacitors? What is the minimum... Problem 8CQ: If you wish to store a large amount of energy in a capacitor bank, would you connect capacitors in... Problem 9CQ: Discuss what would happen if a conducting slab rather than a dielectric were inserted into the gap... Problem 10CQ: Discuss how the energy stored in an empty but charged capacitor changes when a dielectric is... Problem 11CQ: Distinguish between dielectric strength and dielectric constant. Problem 12CQ: Water is a good solvent because it has a high dielectric constant. Explain. Problem 13CQ: Water has a high dielectric constant. Explain why it is then not used as a dielectric material in... Problem 14CQ: Elaborate on why molecules in a dielectric material experience net forces oil them in a non-uniform... Problem 15CQ: Explain why the dielectric constant of a substance containing permanent molecular electric dipoles... Problem 16CQ: Give a reason why a dielectric material increases capacitance compared with what it would be with... Problem 17CQ: Elaborate on the way in which the polar character of water molecules helps to explain water's... Problem 18CQ: Sparks will occur between the plates of an ail-filled capacitor at a lower voltage when the air is... Problem 19P: What charge is stored in a 180.0F capacitor when 120.0 V is applied to it? Problem 20P: Find the charge stored when 5.50 V is applied to an 8.00-pF capacitor. Problem 21P: Calculate the voltage applied to a 2.00F capacitor when it holds 3.10C of charge. Problem 22P: What voltage must be applied to an 8.00-nF capacitor to store 0.160 mC of charge? Problem 23P: What capacitance is needed to store 3.00C of charge at a voltage of 120 V? Problem 24P: What is the capacitance of a large Van de Graaff generator’s terminal, given that it stores 8.00 mC... Problem 25P: The plates of an empty parallel-plate capacitor of capacitance 5.0 pF are 2.0 mm apart. What is the... Problem 26P: A 60.0-pF vacuum capacitor has a plate area of 0.010 m2. What is the separation between its plates? Problem 27P: A set of parallel plates has a capacitance of 5.0F . How much charge must be added to the plates to... Problem 28P: Consider Earth to be a spherical conductor of radius 6400 km and calculate its capacitance. Problem 29P: If the capacitance per unit length of a cylindrical capacitor is 20 pF/m, what is the ratio of tine... Problem 30P: , An empty parallel-plate capacitor has a capacitance of 20F . How much charge must leak off its... Problem 31P: A 4.00-pF is connected in series with an 8.00-pF capacitor and a 400-V potential difference is... Problem 32P: Three capacitors, with capacitances of C1=2.0F , C2=3.0F, and C3=6.0F , respectively, are connected... Problem 33P: Find the total capacitance of this combination of series and parallel capacitors shown below. Problem 34P: Suppose you need a capacitor bank with a total capacitance of 0.750 F but you have only 1.50-mF... Problem 35P: What total capacitances can yon make by connecting a 5.00F and a 8.00F capacitor? Problem 36P: Find the equivalent capacitance of the combination of series and parallel capacitors shown below. Problem 37P: Find the net capacitance of the combination of series and parallel capacitors shown below. Problem 38P: A 40-pF capacitor is charged to a potential difference of 500 V. Its terminals are then connected to... Problem 39P: A 2.0F capacitor and a 4.0F capacitor are connected in series across a 1.0-kV potential. The charged... Problem 40P: How much energy is stored in an 8.00F capacitor whose plates are at a potential difference of 6.00... Problem 41P: A capacitor has a charge of 2.5C when connected to a 6.0-V battery. How much energy is stored in... Problem 42P: How much energy is stored in die electrical field of a metal sphere of radius 2.0 m that is kept at... Problem 43P: (a) What is the energy stored in the 10.0F capacitor of a heart defibrillator charged to 9.00103 V... Problem 44P: In open-heart surgery, a much smaller amount of energy will defibrillate the heart, (a) What voltage... Problem 45P: A 165F capacitor is used in conjunction with a dc motor. How much energy is stored in it when 119 V... Problem 46P: Suppose you have a 9.00-V battery, a 2.00F capacitor, and a 7.40F capacitor, (a) Find the charge and... Problem 47P: An anxious physicist worries that the two metal shelves of a wood frame bookcase might obtain a high... Problem 48P: A parallel-plate capacitor is made of two square plates 25 cm on a side and 1.0 mm apart. The... Problem 49P: Suppose that the capacitance of a variable capacitor can be manually changed from 100 pF to 800 pF... Problem 50P: Show that for a given dielectric material, the maximum energy a parallel-plate capacitor can store... Problem 51P: An air-filled capacitor is made from two flat parallel plates 1.0 mm apart. The inside area of each... Problem 52P: A capacitor is made from two concentric spheres, one with radius 5.00 cm, the other with radius 8.00... Problem 53P: A parallel-plate capacitor has charge of magnitude 9.00F on each plate and capacitance 3.00F when... Problem 54P: Some cell walls in the human body have a layer of negative charge on the inside surface. Suppose... Problem 55P: A parallel-plate capacitor with only air between its plates is charged by connecting the capacitor... Problem 56P: Two flat plates containing equal and opposite charges are separated by material 4.0 mm thick with a... Problem 57P: For a Teflon ™-filled, parallel-plate capacitor, the area of the plate is 50.0 cm and the spacing... Problem 58P: Find the capacitance of a parallel-plate capacitor having plates with a surface area of 5.00 m2 and... Problem 59P: (a) What is the capacitance of a parallel-plate capacitor with plates of area 1.50 m that are... Problem 60P: Two parallel plates have equal and opposite charges. When the space between the plates is evacuated,... Problem 61P: The dielectric to be used in a parallel-plate capacitor has a dielectric constant of 3.60 and a... Problem 62P: When a 360-nF air capacitor is connected to a power supply, the energy stored in the capacitor is... Problem 63P: A parallel-plate capacitor has square plates that are 8.00 cm on each side and 3.80 mm apart. The... Problem 64AP: A capacitor is made from two flat parallel plates placed 0.40 mm apart. When a charge of 0.020C is... Problem 65AP: An air-filled (empty) parallel-plate capacitor is made from two square plates that are 25 cm on each... Problem 66AP: Suppose that the capacitance of a variable capacitor can be manually changed from 100 to 800 pF by... Problem 67AP: Earth can be considered as a spherical capacitor with two plates, where the negative plate is the... Problem 68AP: A 4.00F capacitor and a 6.00F capacitor are connected in parallel across a 600-V supply line, (a)... Problem 69AP: Three capacitors having capacitances of 8.40, 8.40, and 4.20F , respectively, are connected in... Problem 70AP: A parallel-plate capacitor with capacitance 5.0F is charged with a 12.0-V battery, after which the... Problem 71AP: (a) How much energy is stored in the electrical fields in the capacitors (in total) shown below? (b)... Problem 72AP: Three capacitors having capacitances 8.4, 8.4, and 4.2 F are connected in series across a 36.0-V... Problem 73AP: (a) An 8.00/F capacitor is connected in parallel to another capacitor, producing a total capacitance... Problem 74AP: (a) On a particular day, it takes 9.60103 J of electrical energy to start a truck’s engine.... Problem 75AP: (a) A certain parallel-plate capacitor has plates of area 4.00 m2 , separated by 0.0100 mm of nylon,... Problem 76AP: A prankster applies 450 V to an 80.0F capacitor and then tosses it to an unsuspecting victim. The... Problem 77CP: A spherical capacitor is formed from two concentric spherical conducting spheres separated by... Problem 78CP: The network of capacitors shown below are all uncharged when a 300-V potential is applied between... Problem 79CP: Electronic flash units for cameras contain a capacitor for storing the energy used to produce the... Problem 80CP: A spherical capacitor is formed from two concentric spherical conducting shells separated by a... Problem 81CP Problem 82CP: A parallel-plate capacitor is filled with two dielectrics, as shown below. When the plate area is A... Problem 83CP: A parallel-plate capacitor is filled with two dielectrics, as shown below. Show that the capacitance... Problem 84CP: A capacitor has parallel plates of area 12 cm2 separated by 2.0 mm. The space between the plates is... format_list_bulleted