Recent questions tagged #sub

0 votes

0 answers

(i) Explain the meaning of the statement ‘electric charge of a body is quantised’.(ii) Why can one ignore quantisation of electric charge when dealing with macroscopic i.e., large scale

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

When a glass rod is rubbed with a silk cloth, charges appear on both. A similar phenomenon is observed with many other pairs of bodies. Explain how this observation is consistent with the law of conservation of

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Four point charges qA = 2 µC, qB = –5 µC, qC = 2 µC, and qD = –5 µC are located at the corners of a square ABCD of side 10 cm. What is the force on a charge of 1 µC placed at the centre of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Explain why two field lines never cross each other at any

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Two point charges qA = 3 µC and qB = –3 µC are located 20 cm apart in vacuum. (i) What is the electric field at the midpoint O of the line AB joining the two charges?(ii) If a negative test charge of magnitude 1.5 × 10–9 C is placed at this point, what is the force experienced by the test

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A system has two charges qA = 2.5 × 10–7 C and qB = –2.5 × 10–7 C located at points A: (0, 0, –15 cm) and B: (0,0, +15 cm), respectively. What are the total charge and electric dipole moment of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

An electric dipole with dipole moment 4 × 10–9 C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 × 104 NC–1 . Calculate the magnitude of the torque acting on the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A polythene piece rubbed with wool is found to have a negative charge of 3 × 10–7 C(i) Estimate the number of electrons transferred (from which to which?)(ii) Is there a transfer of mass from wool to

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Two insulated charged copper spheres A and B have their centres separated by a distance of 50 cm. If the charge on each is 6.5 × 10–7 C? The radii of A and B are negligible compared to the distance of separation. (a)What is the mutual force of electrostatic

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Two insulated charged copper spheres A and B have their centres separated by a distance of 50 cm. If the charge on each is 6.5 × 10–7 C? The radii of A and B are negligible compared to the distance of separation. Suppose the spheres A and B in

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Fig . shows tracks of three charged particles in a uniform electrostatic field. Give the signs of the three charges. Which particle has the highest charge to mass

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Consider a uniform electric field E = 3 × 103 î N/C. What is the flux of this field through a square of 10 cm on a side whose plane is parallel to the yz

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Consider a uniform electric field E = 3 × 103 î N/C. What is the flux through the same square if the normal to its plane makes a 60° angle with the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Consider a uniform electric field E = 3 × 103 î N/C. What is the net flux of the uniform electric field of Exercise 1.15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 × 103 `Nm^2`/C. What is the net charge inside the box?Why or Why

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 × 103 `Nm^2`/C. If the net outward flux through the surface of the box were zero, could you conclude that there were

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A point charge +10 µC is a distance 5 cm directly above the centre of a square of side 10 cm, as shown in Fig. . What is the magnitude of the electric flux through the square? (Hint: Think of the square as one face of a cube with edge 10

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A point charge of 2.0 µC is at the centre of a cubic Gaussian surface 9.0 cm on edge. What is the net electric flux through the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

0 votes

0 answers

A point charge causes an electric flux of –1.0 × 103 `Nm^2` /C to pass through a spherical Gaussian surface of 10.0 cm radius centred on the charge. If the radius of the Gaussian surface were doubled, how much flux would pass through the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

Recent questions tagged #sub

Categories