Question

What is the SI derived unit of electrical current?​

Answer 1

Answer:

1. The SI derived unit of electric current is 'Ampere'.

2. If a net charge Q, flows across any cross-section of the conductor in time t, then the current I, through the cross section is:

I=Q/t  

Ampere=Coulomb/second  

1 ampere=1 coulomb/1 sec

3. Current can be defined as the flow of charge across a surface at the rate of 1 coulomb per second.

4. Small quantities of current are expressed in milliamperes or in microamperes.

5. An instrument called ammeter measures current in a circuit.