When the current in a toroidal solenoid is changing at a rate of 0050 n5, the magnitude of the induced emf is 126 mv, when tire current equals 1.40 a, the average flux through each turn of the solenoid is 000285 wb. how many turns doesthe solenoid have?

N = 1238

Explanation:

It is given that,

Change in current in the toroidal solenoid,

Induced emf in the solenoid,

Current in tire, I = 1.4 A

Flux in the solenoid,

The induced emf in the solenoid is given by :

L is the self inductance of the solenoid

.........(1)

The self inductance of solenoid is given by :

............(2)

From equation (1) and (2) :

N = 1237.89

or

N = 1238

So, the number of turns in the solenoid is 1238. Hence, this is the required solution.

the rearrangement of particles in a physical change. hope this

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =