Atomic size and its unit of measurement: The atom has two parts namely nucleus at its center and orbits surrounding the nucleus. The space or the distance between the nucleus of the atom and the outer most shell of the atom is considered as the atomic size of the atom. This may be less for some atoms whereas very large of others. Angstroms is the measurement unit of atomic size. Atomic radius in a group: There are 18 groups in a periodic table. As we move from top to bottom in a group, we may find the atomic number of the elements increases. The atomic number gives us information about the number of electrons present in it. As the number of electrons increases, the number of orbits also increases, due to which the atomic radius also gets increased. Atomic radius in a period: There are 7 periods in the periodic table. As we move from left to right in a period, the proton quantity increases. Due to this a strong force of attraction between the electron and proton increases which in turn leads to the formation of a high nuclear charge binding them strongly and pulling them towards the nucleus. Due to this fact, the size of the element decreases as we are in a period from left to right.
<p>Distribution of magnetic field due to a current-carrying a circular loop:<br /> The concentric circles address the magnetic field, at each mark of a current conveying round loop. The magnetic field becomes bigger as we move away from the wire. Straight-line shows up at the focal point of the circle(loop).<br /> <img alt="" src=" " style="height:315px; width:372px" /></p>
A magnetic field delivered by a current conveying wire at a given point relies straightforwardly upon the current going through it. This is on the grounds that the current in every round turn has a similar bearing and field, in light of the fact that each turn simply adds up. So if there is a roundabout loop having 'n' turns, the field delivered is n times as extensive as that created by a solitary turn.
