229k views
16 votes
Plzz help.me with both questions​

Plzz help.me with both questions​-example-1
User Higty
by
7.3k points

1 Answer

4 votes

Step-by-step explanation:

Primary cell

1. They are non-rechargeable.

2. The energy density of primary cells is more.

3. The internal resistance of primary cells is more.

4. Example : Zinc-Carbon cell.

Secondary cells

1. They are rechargeable cells.

2. The energy density of secondary cells is less.

3. The internal resistance of secondary cells is less.

4. Example : Car batteries

Current :

The flow of electric charge per unit time is called electric current. It can be given by the formula as follows :


I=(q)/(t)

The SI unit of electric current is Ampere.

1 Ampere is defined as the current that flows with the electric charge of one Coulomb per second (C/s).

User Dan MacBean
by
6.8k points