Chapter 17 – Electric Charge and Field
Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 17 - Electric Charge and Field
A thin glass rod is bent into a semi-circle of radius R . A charge +Q is uniformly distributed along the upper half and a charge −Q is uniformly distributed along the lower half. The electric field E at P, the centre of the semi-circle is
06
Dec
A thin glass rod is bent into a semi-circle of radius R . A charge +Q is uniformly distributed along the upper half and a charge −Q is uniformly distributed along the lower half. The electric field E at P, the centre of the semi-circle is A ring of charge with radius 0.5m has 0.002 [...]
Four identical charges Q are fixed at the four corners of a square of side a. The electric field at a point P located symmetrically at a distance a/2–√ from the center of the square is
06
Dec
Four identical charges Q are fixed at the four corners of a square of side a. The electric field at a point P located symmetrically at a distance a/2–√ from the center of the square is Four identical charges Q are fixed at the four corners of a square of side a. The electric field [...]
A positive point charge 50μC is located in the plane xy at the point with radius vector r0=2i+3j, the electric field vector E and its magnitude at a point with radius vector r=8i−5j. where r0 and r are expressed in metres.
06
Dec
A positive point charge 50μC is located in the plane xy at the point with radius vector r0=2i+3j, the electric field vector E and its magnitude at a point with radius vector r=8i−5j. where r0 and r are expressed in metres. A positive point charge 50μC is located in the plane xy at the point [...]
A point charge q=−8.0nC is located at the origin. The electric field (in NC^−1 ) vector at the point x=1.2m,y=−1.6m, as shown in figure, is :
06
Dec
A point charge q=−8.0nC is located at the origin. The electric field (in NC^−1 ) vector at the point x=1.2m,y=−1.6m, as shown in figure, is : A point charge q=−8.0nC is located at the origin. The electric field (in NC^−1 ) vector at the point x=1.2m as shown in figure is y=−1.6m December 6, 2020 [...]
Five point charges, each of value +q , are placed on five vertices of a regular hexagon of side L meters. The magnitude of the force on the point charge of value -q coul, placed at the centre of the hexagon is
06
Dec
Five point charges, each of value +q , are placed on five vertices of a regular hexagon of side L meters. The magnitude of the force on the point charge of value -q coul, placed at the centre of the hexagon is are placed on five vertices of a regular hexagon of side L meters. [...]
It is required to hold equal charges, q in equilibrium at the corners of a square. What charge when placed at the centre of the square will do this?
06
Dec
It is required to hold equal charges, q in equilibrium at the corners of a square. What charge when placed at the centre of the square will do this? It is required to hold equal charges q in equilibrium at the corners of a square. What charge when placed at the centre of the square [...]
Three identical spheres, each having a charge q and radius R. are kept in such a way that each touches the other two. The magnitude of the electric force on any sphere due to the other two is
06
Dec
Three identical spheres, each having a charge q and radius R. are kept in such a way that each touches the other two. The magnitude of the electric force on any sphere due to the other two is each having a charge q and radius R. are kept in such a way that each touches [...]
In fig two equal positive point charge q1 = q2 = 2.0μC. Interact with a third point charge Q=4.0μC. The magnitude as well as direction of the net force on Q is
06
Dec
In fig two equal positive point charge q1 = q2 = 2.0μC. Interact with a third point charge Q=4.0μC. The magnitude as well as direction of the net force on Q is In fig two equal positive point charge q1 = q2 = 2.0μC. Interact with a third point charge Q=4.0μC. The magnitude as well [...]
A block of mass m containing a net negative charge -q is placed on a frictionless horizontal table and is connected to a wall through an unstretched spring of spring constant k as shown. If horizontal electric field E parallel to the spring is switched on, then the maximum compression of the spring is
06
Dec
A block of mass m containing a net negative charge -q is placed on a frictionless horizontal table and is connected to a wall through an unstretched spring of spring constant k as shown. If horizontal electric field E parallel to the spring is switched on, then the maximum compression of the spring is A [...]
Three positive charges of equal magnitude q are placed at the vertices of and equilateral triangle of side l. How can the system of charges be placed in equilibrium?
06
Dec
Three positive charges of equal magnitude q are placed at the vertices of and equilateral triangle of side l. How can the system of charges be placed in equilibrium? Three positive charges of equal magnitude q are placed at the vertices of and equilateral triangle of side l. How can the system of charges be [...]