Question

An electric field of 3 × 1016 is needed to create a spark in the air. If the charged particles in the field are separated by a distance of 1 mm, how many coulombs of charge are needed for a spark?

Answer 1

The correct answer is 3.

Step-by-step explanation:

Answer 2

There are 3.34 C of charge are needed to spark.

Step-by-step explanation:

Given that,

Electric field,
`E=3* 10^(16)\ N/C`

If the charged particles in the field are separated by a distance of 1 mm, d = 1 mm

The electric field is given by the formula as follows :

`E=(kq)/(d^2)`

q is charge

`q=(Ed^2)/(k)\\\\q=(3* 10^(16)* (1* 10^(-3))^2)/(9* 10^9)\\\\q=3.34\ C`

So, there are 3.34 C of charge are needed to spark.