Grade 12 Physics: Electric Charge
A Grade 12 Physics worksheet covering fundamental concepts of electric charge, Coulomb's Law, and electric fields.
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Topics
Grade 12 Physics: Electric Charge
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following statements about electric charge is true?
Protons have a negative charge.
Electrons have a positive charge.
Like charges attract each other.
Opposite charges attract each other.
2. What is the SI unit of electric charge?
Ampere
Volt
Coulomb
Ohm
3. The principle of conservation of charge states that the total electric charge in an isolated system constant.
4. Coulomb's Law describes the electrostatic force between two charges.
5. State Coulomb's Law and provide its mathematical expression.
6. Explain the difference between a conductor and an insulator in terms of electric charge.
7. An electric field is a region around a charged particle where a force would be exerted on another charged particle.
True
False
8. The electric field lines originate from negative charges and terminate on positive charges.
True
False
9. Two point charges, q1 = +5.0 μC and q2 = -3.0 μC, are separated by a distance of 0.20 m. Calculate the magnitude of the electrostatic force between them. (k = 8.99 × 10^9 N·m²/C²)
10. An electron is placed in a uniform electric field of magnitude 2.0 × 10^3 N/C, directed to the right. Calculate the magnitude and direction of the electric force on the electron. (e = 1.60 × 10^-19 C)