Question

Units for quantity of electricity are:

• A. Volt
• B. Ampere
• C. Joule
• D. Coulomb

Hint:

Remember: Quantity of electricity = Charge = \( Q = I \times t \). Its SI unit is \textbf{Coulomb (C)}.

Answer 1

The Correct Option is D

Step 1: Understanding the Quantity of Electricity
The quantity of electricity refers to the total electric charge transferred through a circuit. It is represented by the symbol \( Q \) and is mathematically defined as: \begin{equation} Q = I \times t \end{equation} where \( I \) is the current in amperes, and \( t \) is the time in seconds. Step 2: SI Unit of Charge
The SI unit of electric charge is the Coulomb (C). One coulomb is defined as the quantity of charge transported by a current of one ampere in one second. Step 3: Explanation of Other Options
- (A) Volt: Unit of electric potential or potential difference.
- (B) Ampere: Unit of electric current, not charge.
- (C) Joule: Unit of energy or work.
Conclusion: Among the given options, the correct SI unit for quantity of electricity is the Coulomb.