Question 1: Why does the electric field in a dielectric decrease when it is placed in an external electric field?
Question 2: A charged particle is free to move in the electric field. Will it always move all along an electric line of force?
Question 3: If V (= q/4πεor) is the potential at a distance r due to a point charge q, then find out the electric field due to a point charge q, at a distance r.
Question 4: Draw an arrangement of three point charges separated by finite distances, which has zero electric Potential energy.
Question 5: Charge of 2C is placed at the centre of a cube of volume 8 cm3. Find out the electric flux passing via one face?
Question 6: Three charges, each equivalent to +2C are placed at the corners of an equilateral triangle. If the force between any two charges be F, then find out the net force on either Charge?
Question 7: A charged particle q is shot in the direction of another charged particle Q which is fixed, with a speed v. It approaches Q up to a closest distance r and then returns. If q were given a speed 2v, then find out the closest distance of approach.
Question 8: Two capacitors of capacitance 6mF and 12mF are joined in series with the battery. The voltage across the 6mF capacitor is 2 volt .Calculate the total battery voltage.
Question 9: Five identical capacitors, each of capacitance C are joined between points X and Y as shown in the figure below. If the equivalent capacitance of the combination between X and Y is 5mF. Compute the capacitance of each capacitor.
Question 10: A parallel plate capacitor with air between the plates has a capacitance of 8 pF. The separation between the plates is now decreased by half and the space between them is filled with a medium of dielectric constant 5. Compute the value of capacitance of parallel plate capacitor in the second case.