Answer:
$2080
Step-by-step explanation:
Given: Cost of generator= $11000.
Residual value= $1000.
Estimated life of generator= 5000 hours.
Actual activity performed during the period= 1040 hours.
Now, finding the depreciation expense for the first year using the units-of-activity method.
Formula;

⇒ Depreciation expense=

Opening parenthesis
⇒ Depreciation expense=

⇒ Depreciation expense=

Hence, the depreciation expense for the first year using the units-of-activity method of depreciation is $2080.