What is used to denote net charge that flows across any cross-section of a conductor of electricity?
Show answer & explanation
Correct answer: B
Explanation
Correct Answer:
Option 2: Q
Explanation:
In physics, the total charge flowing through the cross-section of an electrical conductor is denoted by ‘Q’. It represents the quantity of total electric charge. It is related to current (I) and time (t), expressed by the formula Q = I × t. Here, the SI unit of Q is the Coulomb. This concept is linked to the fundamental definition of electric current and serves as a crucial foundation of electrical science.
Additional Facts:
Option 1: J denotes Current density.
Option 2: Correct Answer.
Option 3: C is the symbol for Coulomb, not the quantity itself.
Option 4: I denotes Electric current.
Potential Questions for Upcoming Exams:
Question: What is the formula for electric current?
Answer: I = Q/t
Question: Coulomb is the unit of what?
Answer: Charge
Question: What is the SI unit of current?
Answer: Ampere
Question: What is Ohm's Law?
Answer: V = IR