ELECTROSTATICS:
List of Problems:
1. Two unequal point charges repel each other with a force of 0.2N when they are 10cm apart. Find the force which each exerts on the other when they are: (a) 1cm apart (b) 5cm apart.
2. Two point charges of +1x10-4 and -1x10-4 coulombs are placed at a distance of 40cm from each other. A charge +6x10-5coulombs is placed mid way between them. What is the magnitude and direction of force on it?
3. Three point charges each of 4 microC are placed at three corners of a square of side 20cm. Find the magnitude of force on each.
4. Two charges of +2 x 10-7C and -5 x 10-7C are placed at a distance of 50cm from each other. Find a point on the line joining the charges at which the electric field is zero.
5. How many electrons should be removed from each of the two similar spheres each of 10g so that electrostatic repulsion be balanced by gravitational force?
6. There is a potential difference of 150V between two conductors of a power line. A charge of 600C is carried from one conductor to the other. How much work is required? If the time necessary to transport the charge is 1.25s how much power is used?
7. Two capacitors of 2uf and 8uf are joined in series and a potential difference of 300V is applied. Find the charge and potential difference for each capacitor.
8. Find the equivalent capacitance of the combination shown in the following diagram.
List of Problems:
1. Two unequal point charges repel each other with a force of 0.2N when they are 10cm apart. Find the force which each exerts on the other when they are: (a) 1cm apart (b) 5cm apart.
2. Two point charges of +1x10-4 and -1x10-4 coulombs are placed at a distance of 40cm from each other. A charge +6x10-5coulombs is placed mid way between them. What is the magnitude and direction of force on it?
3. Three point charges each of 4 microC are placed at three corners of a square of side 20cm. Find the magnitude of force on each.
4. Two charges of +2 x 10-7C and -5 x 10-7C are placed at a distance of 50cm from each other. Find a point on the line joining the charges at which the electric field is zero.
5. How many electrons should be removed from each of the two similar spheres each of 10g so that electrostatic repulsion be balanced by gravitational force?
6. There is a potential difference of 150V between two conductors of a power line. A charge of 600C is carried from one conductor to the other. How much work is required? If the time necessary to transport the charge is 1.25s how much power is used?
7. Two capacitors of 2uf and 8uf are joined in series and a potential difference of 300V is applied. Find the charge and potential difference for each capacitor.
8. Find the equivalent capacitance of the combination shown in the following diagram.
