Question

1. Define electric current. Mention its SI unit.

2. Define temperature. Mention its SI and common units.

3. Write Fundamental units used to measure mass, length and time.

Answer 1

1. Electric current is the rate of flow of charge through a conductor. SI unit of electric current is ampere (A)

2. Degree of hotness or coldness of an object is called temperature. SI unit of temperature is kelvin (K).
Some other common units if temperature are $°C$and $°F$

3.
a. mass - kilogram
b. length - metre
c. time - second