You Do Need power plug adapter while traveling from Ethiopia to British Virgin Islands.

Here is Why You Need An Adapter

The outlet and plug type used in British Virgin Islands are A and B and in Ethiopia are C, F and G. This is how they look like.

Ethiopia

In Ethiopia, outlets of type C, F and G are in use.

Type C

Type F

Type G

British Virgin Islands

In British Virgin Islands, outlets of type A and B are in use.

Type A

Type B