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Class 12 · Physics · Medium
→The electric field at the centre of a uniformly charged ring is zero. If the ring's total charge is doubled while the distribution remains uniform, what is the electric field at the centre?
Class 12 · Physics · Easy
→A solid with uniform volume charge density is divided into three parts of unequal volumes. Which part has the greater volume charge density?
Class 12 · Physics · Easy
→A uniformly surface-charged plate is divided into two parts with unequal areas. Which part has the greater surface charge density?
Class 12 · Physics · Easy
→A wire with uniform linear charge density is cut into two parts of unequal lengths. Which part has the greater linear charge density?
Class 12 · Physics · Easy
→In a uniform volume distribution, a part has a volume equal to seven-tenths of the total volume. What fraction of the total charge is contained in that part?
Class 12 · Physics · Easy
→In a uniform surface distribution, a part has area equal to three-eighths of the total area. What fraction of the total charge is on that part?
Class 12 · Physics · Easy
→In a uniform linear distribution, a part has length equal to two-fifths of the total length. What fraction of the total charge is on that part?
Class 12 · Physics · Medium
→Two surfaces have the same total charge. The area of the first surface is four times that of the second. Assuming uniform distribution, how does the surface density of the first compare with that of the second?
Class 12 · Physics · Medium
→In two uniformly charged wires, the first has three times the linear density of the second and half its length. How does the total charge of the first wire compare with that of the second?
Class 12 · Physics · Medium
→In a uniform volume distribution, volume density is 6 C/m³ and volume is 10 m³. If density becomes half and volume becomes three times, what is the total charge?
Class 12 · Physics · Medium
→In a uniform surface distribution, total charge is 84 C and area is 12 m². If total charge doubles and area becomes seven times, what is the new surface density?
Class 12 · Physics · Medium
→In a uniform linear charge distribution, total charge is 90 C and length is 15 m. If total charge becomes one third and length becomes one fifth, what is the new linear density?
Class 12 · Physics · Medium
→When is integration mainly needed in a continuous charge distribution?
Class 12 · Physics · Hard
→For difficult problems, which ordered identification is most useful to begin solving a continuous charge distribution correctly?
Class 12 · Physics · Medium
→If total charge of a distribution is positive, must the charge of every small element be positive?
Class 12 · Physics · Hard
→If the total charge of a system is zero, is the electric field necessarily zero everywhere?
Class 12 · Physics · Hard
→If the sign of charge density changes over a surface, what must be considered when finding the total charge and electric field?
Class 12 · Physics · Medium
→What is the main problem caused by choosing the wrong unit for density in a continuous charge distribution?
Class 12 · Physics · Medium
→If two equal small elements in a linear charge distribution carry unequal charges, which conclusion is appropriate?
Class 12 · Physics · Medium
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