Chapter 17 – Electric Charge and Field
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A block of mass ma is suspended vertically with a spring of spring constant k. The block is made to oscillate in a gravitation field. Its time period is found to be T. Now the space between the plates is made gravity free, and an electric field E is produced in the downward direction. Now the block is given a charge q. the new time period of oscillation is
06
Dec
A block of mass ma is suspended vertically with a spring of spring constant k. The block is made to oscillate in a gravitation field. Its time period is found to be T. Now the space between the plates is made gravity free, and an electric field E is produced in the downward direction. Now [...]
An electric charged q exerts a force F on a similar electric charge q separated by a distance r. A third charge q/4 is placed midway between the two charges. Now the force F will
06
Dec
An electric charged q exerts a force F on a similar electric charge q separated by a distance r. A third charge q/4 is placed midway between the two charges. Now the force F will An electric charged q exerts a force F on a similar electric charge q separated by a distance r. A [...]
The maximum electric field at a point on the axis of a uniformly charged ring is E0. At how many points on the axis will the magnitude of the electric field be E0/2.
06
Dec
The maximum electric field at a point on the axis of a uniformly charged ring is E0. At how many points on the axis will the magnitude of the electric field be E0/2. The maximum electric field at a point on the axis of a uniformly charged ring is E0. At how many points on [...]
Three charges (each Q) are placed at the three corners of an equilateral triangle. A fourth charge q is placed at the center of the triangle. The ratio ∣q/Q∣ so as to make the system in equilibrium is:
06
Dec
Three charges (each Q) are placed at the three corners of an equilateral triangle. A fourth charge q is placed at the center of the triangle. The ratio ∣q/Q∣ so as to make the system in equilibrium is: It is required to hold equal charges q in equilibrium at the corners of a square. What [...]
Two pith balls each with mass m are suspended from insulating threads. When the pith balls are given equal positive charge Q, they hang in equilibrium as shown. We now increase the charge on the left pith ball from Q to 2Q while leaving its mass essentially unchanged. Which of he following diagrams best represent the new equilibrium configuration?
06
Dec
Two pith balls each with mass m are suspended from insulating threads. When the pith balls are given equal positive charge Q, they hang in equilibrium as shown. We now increase the charge on the left pith ball from Q to 2Q while leaving its mass essentially unchanged. Which of he following diagrams best represent [...]
Four electrical charges are arranged on the corners of a 10cm square as shown. What would be the direction of the resulting electric field at the center point P?
06
Dec
Four electrical charges are arranged on the corners of a 10cm square as shown. What would be the direction of the resulting electric field at the center point P? Four electrical charges are arranged on the corners of a 10cm square as shown. What would be the direction of the resulting electric field at the [...]
Four point charge are placed at the corners of a square with diagonal 2a as shown. What is the total electric field at the center of the square?
06
Dec
Four point charge are placed at the corners of a square with diagonal 2a as shown. What is the total electric field at the center of the square? Four point charge are placed at the corners of a square with diagonal 2a as shown. What is the total electric field at the center of the [...]
A particle of mass m and charge -q moves diametrically through a uniformly charged sphere of radius R with total charge Q. The angular frequency of the particle’s simple harmonic motion, if its amplitude < R, is given by :
06
Dec
A particle of mass m and charge -q moves diametrically through a uniformly charged sphere of radius R with total charge Q. The angular frequency of the particle’s simple harmonic motion, if its amplitude < R, is given by : A particle of mass m and charge -q moves diametrically through a uniformly charged sphere [...]
Find the electric field vector at P (a,a,a) due to three infinitely long lines of charges along the x-, y- and z-axis, respectively. The charge density i.e. charge per unit length of each wire is (lamba),
06
Dec
Find the electric field vector at P (a,a,a) due to three infinitely long lines of charges along the x-, y- and z-axis, respectively. The charge density i.e. charge per unit length of each wire is (lamba), A) a) due to three infinitely long lines of charges along the x- Find the electric field vector at [...]
A system consists of a thin charged wire ring of radius r and a very long uniformly charged wire oriented along the axis of the ring, with one of its ends coinciding with the center of the ring. The total charge on the ring is q, and the linear charge density on the straight wire is λ. The interaction force between the ring and the wire is :
06
Dec
A system consists of a thin charged wire ring of radius r and a very long uniformly charged wire oriented along the axis of the ring, with one of its ends coinciding with the center of the ring. The total charge on the ring is q, and the linear charge density on the straight wire [...]
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A system consists of a thin charged wire ring of radius r and a very long uniformly charged wire oriented along the axis of the ring ,
and the linear charge density on the straight wire is λ. The interaction force between the ring and the wire is : ,
with one of its ends coinciding with the center of the ring. The total charge on the ring is q ,