What is the magnetic field at the center of a circular loop
ofwire of radius 4.0cm when a current of 2.0a flows in
thewire?

The magnetic field at the center of a circular loop is .

Explanation:

Given that,

Radius = 4.0 cm

Current = 2.0 A

We need to calculate the magnetic field at the center of a circular loop

Using formula of magnetic field

Where, I = current

r = radius

Put the value into the formula

Hence, The magnetic field at the center of a circular loop is .

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information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

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the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.