IB Electric Potential and Fields with calculations

Calculate the electric potential energy of a charge of 2C placed in an electric field of 5V.

• 7 Joules

• 3 Joules

• 15 Joules

• 10 Joules

Determine the electric field strength at a point 3m away from a charge of 4μC.

• E = 2000 N/C

• E = 5000 N/C

• E = 3993.33 N/C

• E = 10000 N/C

Explain the concept of equipotential surfaces in relation to electric fields.

• Equipotential surfaces are surfaces in space where every point on the surface has the same electric potential. In relation to electric fields, equipotential surfaces are perpendicular to the electric field lines. This means that no work is done in moving a charge along an equipotential surface, as the electric field is always perpendicular to the surface.

• Equipotential surfaces are always at a 45-degree angle to the electric field lines.

• Equipotential surfaces have varying electric potential at different points.

• Equipotential surfaces are parallel to the electric field lines.

Find the electric potential at a point located 4m away from a point charge of 6μC.

• The electric potential at a point located 4m away from a point charge of 6μC is 1.124625 x 10^6 V.

• The electric potential at a point located 4m away from a point charge of 6μC is 2.5 x 10^6 V.

• The electric potential at a point located 4m away from a point charge of 6μC is 500,000 V.

• The electric potential at a point located 4m away from a point charge of 6μC is -1.124625 x 10^6 V.

Calculate the work done in moving a charge of 3C from a point at 2V to a point at 5V.

• 15J

• 12J

• 9J

• 6J

What is the electric field strength at a distance of 2m from a charge of 8μC?

• 1.12 x 10^4 N/C

• 6.78 x 10^3 N/C

• 2.34 x 10^4 N/C

• 4.56 x 10^4 N/C

Describe the relationship between electric potential energy and electric potential.

• Electric potential is the electric potential energy per unit charge.

• Electric potential is the force experienced by a charge in an electric field.

• Electric potential is the total electric potential energy of a system.

• Electric potential is the rate of change of electric potential energy.

Determine the electric potential energy of a system of two charges of 5μC and 3μC placed 2m apart.

• 54.321 J

• 32.145 J

• 45.678 J

• 67.425 J

Explain how the electric field strength is related to the force experienced by a charge in an electric field.

• The electric field strength is directly proportional to the force experienced by a charge in an electric field.

• The electric field strength is not related to the force experienced by a charge in an electric field.

• The electric field strength is proportional to the charge of the particle, not the force experienced.

• The electric field strength is inversely proportional to the force experienced by a charge in an electric field.

Calculate the electric potential energy of a charge of 6C placed in an electric field of 10V.

• 40 Joules

• 50 Joules

• 60 Joules

• 30 Joules