Answer:
Explanation:
Batteries convert chemical energy to electrical energy. Electric current is the flow of elections. Therefore, the first one is the correct answer.
Voltage = current * resistance
V = I*R
I = 4 A
R = 2 ohm
V = 4 A * 2 ohm
= 8 volt
Answer:
M V R = constant angular momentum is constant because no forces act in the direction of V
Since M (mass) = constant
V R = constant
The force is directed along the gravitational force vector (towards the center of rotation)