Explanation:
It is given that,
Inductance of the inductor,
Resistance of the resistor, R = 10 ohms
(a) Let is the time constant of the circuit. It is given by :
(b) The current equation in RL circuit is given by :
I' = 0.99 I
t = 4.6 ms
Hence, this is the required solution.
Answer:
The balls velocity is 1 divided by 3