Which symbol and unit of measurement are used for electric current?
A. symbol: A; unit: I
B. symbol: C, unit: A
C. symbol: /; unit: C
D. symbol: I; unit: A
Answer (1)
The symbol for electric current is I.
The unit of measurement for electric current is Ampere (A).
The correct option is the one that matches the symbol I and the unit A.
The symbol and unit of measurement for electric current are I ; A .
Explanation
Understanding the Problem The question asks us to identify the correct symbol and unit of measurement for electric current from the given options.
Identifying the Symbol The symbol used to represent electric current is 'I'.
Identifying the Unit The unit of measurement for electric current is the Ampere, which is represented by the symbol 'A'.
Selecting the Correct Option Comparing the identified symbol and unit with the given options, we find that the correct option is:
O symbol: I; unit: A
Final Answer Therefore, the symbol for electric current is I, and its unit of measurement is Ampere (A).
Examples
Understanding electric current is essential in many real-life applications. For example, when designing a simple circuit to power an LED, you need to know the current requirements of the LED (typically measured in milliamperes, mA) and choose a resistor that limits the current to that value. Similarly, when charging your smartphone, the charger provides a certain amount of current (measured in Amperes, A) to the battery. Knowing the current and voltage allows you to calculate the power delivered to the device, which is crucial for efficient and safe charging. In more complex scenarios, like designing power grids or electrical systems for buildings, accurate measurement and control of electric current are vital for ensuring stability and preventing overloads or short circuits.
