Electric Field Fundamentals
A Grade 12 physics worksheet covering electric field concepts, calculations, and properties.
Includes
Standards
Topics
Electric Field Fundamentals
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Read each question carefully and provide your best answer. Show all your work for calculation problems.
1. Which of the following statements about electric field lines is INCORRECT?
They originate from positive charges and terminate on negative charges.
The density of field lines indicates the strength of the electric field.
They can cross each other at a point.
The tangent to a field line at any point gives the direction of the electric field at that point.
2. What is the unit of electric field strength?
Coulomb (C)
Volt (V)
Newton per Coulomb (N/C)
Joule (J)
3. The electric field at a point is defined as the electric force per unit experienced by a small positive test charge placed at that point.
4. Electric field lines always point away from charges and towards charges.
5. A point charge of +5.0 μC is placed at the origin. Calculate the electric field strength at a point 0.50 m along the positive x-axis. (Coulomb's constant k = 8.99 x 10^9 N·m²/C²)
6. Draw the electric field lines for an isolated negative point charge.
7. The electric field inside a conductor in electrostatic equilibrium is always zero.
True
False
8. Electric field is a scalar quantity.
True
False
Match the term on the left with its definition on the right.
9. Electric Field
a. A region around a charged particle or object within which a force would be exerted on other charged particles or objects.
10. Test Charge
b. A hypothetical charge of very small magnitude used to probe the electric field without disturbing it.
11. Equipotential Lines
c. Lines that represent locations where the electric potential is the same.