The alternating current which crosses an apparatus of 600 w has a maximum value of 2.5 a. what is efficient voltage between its demarcations? a. 140 v
b. 240 v
c. 340 v
d. impossible to find without knowing the resistance of the apparatus

Option (b) is correct.

Explanation:

Since we know that,

P = VI

where;

P = power

V= Voltage

I = Current

Since it's given that,

P = 600W

I = 2.5 A

equating these values in the above equation, we get;

V =

V = 240 V

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be