In the millikan oil drop experiment the measured charge of any single droplet was always a whole number multiple of -1.60 x 10-19 c. if a single droplet was found to have a total charge of -9.60ã—10-19 c then how many excess electrons are contained within the drop?

Number of electrons, n = 6

Explanation:

Total charge in a single droplet,

The measured charge of any single droplet,

Let n is the number of excess electrons are contained within the drop. According to the quantization of charge :

n = 6

So, there are 6 electrons contained within the drop. Hence, this is the required solution.

RM 687.3

Step-by-step explanation:

Number of members = 257

Each member makes = RM 25

So, total money = 257×25= RM 6425

1- 45 % of 6425 = 45 /100 × 6425=RM 2891.25

So, RM 2891.25  was spent for the year-end banquet. Hence remaining money after this expenditure = 6425-2891.25= RM 3533.75

2- 65 % of this remaining money = 65 /100 × 3533.75= RM 2296.45

So, RM 2296.5 were spent on souvenirs. Hence remaining amount = 3533.75 - 2296.45 =  RM 1237.3

3- Out of this remaining money RM 550 were spent for club jersey booking fees.

So, amount left = 1237.3 - 550 = RM 687.3