A total of 620 C of charge passes through a flashlight in 0.510 h. What is the average current in milliamperes?

Explanation:

The given data is as follows.

               Q = 620 C,         t = 0.510 hour

First, we will convert hours into seconds. Since, there are 3600 seconds present in 1 hour. Hence, number of seconds present in 0.510 hour are as follows.

                     = 1836 sec

Therefore, we will calculate the average current as follows.

                      I =

                        =

                        = 0.337 C/sec

It is known that,

                      1 C/sec = 1000 mA

So,            

                    = 337 mA

Thus, we can conclude that the average current in milliamperes is 337 mA.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."