UNIT 13 NUMERICALS
ELECTROSTATISTICS
NUMERICAL NO: 13.1
The charge of how many negatively charged particles would be equal to 100 µC? Assume charge on one negative particle is 1.6 x 10-19 C.
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NUMERICAL NO: 13.2
Two point charges q1 = 10 µC and q2 = 5 µC are placed at a distance of 150 cm. what will be the Coulomb’s force between them? Also find the direction of the force.
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NUMERICAL NO: 13.3
The force of repulsion between two identical positive charges is 0.8 N, when the charges are 0.1 m apart. Find the value of each charge.
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NUMERICAL NO: 13.4
Two charges repel each other with a force of 0.1 N when they are 5 cm apart. Find the force between same charges when they are 2 cm apart.
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NUMERICAL NO: 13.5
The potential at a point in an electric field is 104 V. If a charge of +100 µC is brought from infinity to this point. What would be the amount of work done on it?
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NUMERICAL NO: 13.6
A point charge of +2 C is transferred from a point at potential 100 V to a point of 50 V, what would be the energy supplied by the charge?
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NUMERICAL NO: 13.7
A capacitor holds 0.06 coulombs 0f charge when fully charged by a 9 volt battery. Calculate capacitance of the capacitor.
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NUMERICAL NO: 13.8
A capacitor holds 0.03 coulombs 0f charge when fully charged by a 6 volt battery. How much voltage would be required for it to hold 2 coulombs 0f charge?
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NUMERICAL NO: 13.9
Two capacitors of capacitances 6 µF and 12 µF are connected in series with 12 V battery. Find the equivalent capacitance of the combination. Find the charge and the potential difference across each capacitor.
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NUMERICAL NO: 13.10
Two capacitors of capacitances 6 µF and 12 µF are connected in parallel with 12 V battery. Find the equivalent capacitance of the combination. Find the charge and the potential difference across each capacitor.
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