7.2 Electric fields

• Electric fields are regions around charged particles where other charges experience a force
• The formula for electric field strength is E = F / q
• Electric fields are regions around charged particles where other charges experience a force
• Match the property of electric fields with its description:

  Source ↔️ Charged particles

  Force Exerted ↔️ Attractive or repulsive, depending on the charges

  Strength ↔️ Magnitude of the force per unit charge
• A higher electric field strength indicates a greater force exerted on a charge.

  True
• The formula for electric field strength is E = F / q

  True
• Electric field strength is directly proportional to the force and inversely proportional to the charge.

  True
• The direction of an electric field points from positive to negative
• What does the density of electric field lines indicate?

  Field strength
• What is the electric field strength if a charge of 2 coulombs experiences a force of 10 newtons?

  5 N/C
• Match the property of electric fields with its description:

  Definition ↔️ Region around charged particles

  Source ↔️ Charged particles

  Direction ↔️ Positive to negative

  Vector Quantity ↔️ Magnitude and direction
• The electric field strength is calculated using the formula E = F / q
• Electric fields exert either attractive or repulsive forces depending on the charges.

  True
• What are electric fields regions around?

  Charged particles
• What is electric field strength defined as?

  Force per unit charge
• What determines the strength of an electric field?

  Magnitude of force
• Is electric field strength a vector quantity?

  Yes
• The formula for electric field strength is E = F / q
• Electric field strength is the force per unit charge experienced by a positive test charge in an electric field
• The electric field strength formula is E = F / q
• Electric fields exert forces on charged particles within them.

  True
• Order the steps for visualizing electric fields using lines of force:

  1️⃣ Draw lines emanating from positive charges

  2️⃣ Draw lines terminating at negative charges

  3️⃣ Use line density to indicate field strength
• The relationship between electric field strength and electric force is given by E = F / q


  True
• The electric field strength near a point charge is inversely proportional to the square of the distance
• What are the units of electric field strength?

  N/C
• What creates electric fields?

  Charged particles
• Match the property of electric fields with its description:

  Source ↔️ Charged particles create electric fields

  Force Exerted ↔️ Attractive or repulsive

  Strength ↔️ Magnitude of force per unit charge
• Electric field lines point from positive to negative charges

  True
• Electric field strength is measured in N/C
• The electric field strength around a point charge is inversely proportional to the square of the distance
• Electric fields are used in particle accelerators to accelerate charged particles
• The direction of an electric field points from positive to negative charges.


  True
• Match the property of electric field strength with its description:

  Definition ↔️ Force per unit charge in an electric field

  Formula ↔️ E = F / q

  Units ↔️ N/C
• Electric field strength is inversely proportional to the force exerted on a charge.

  False
• What is the unit for electric field strength?

  N/C
• Arrange the components of the electric field strength formula in the correct order:

  1️⃣ E

  2️⃣ F

  3️⃣ q
• Match the property of electric field strength with its description:

  Definition ↔️ Force per unit charge

  Formula ↔️ E = F / q

  Units ↔️ N/C

  Relation to Force ↔️ Higher strength exerts more force
• What type of quantity is electric field strength?

  Vector
• Match the property of electric fields with its description:

  Source ↔️ Charged particles

  Force Exerted ↔️ Attractive or repulsive

  Strength ↔️ Force per unit charge

  Direction ↔️ From positive to negative
• In a uniform electric field between parallel plates, the field lines are straight and evenly spaced