The correct answer among the choices given is option B. The length of the metal threads at the end of a spark plug is called the insulator. The insulator is the main part of a spark plug and is typically made from alumina. This is a very hard ceramic material with high dielectric strength.
The distance between the charge and the source of the electric field is 2.2 m.
The potential energy <em>U</em> of a charge <em>q</em> placed in an electric field created by a source charge <em>Q</em>, at a distance <em>r</em> from the source charge is given by,
...... (1)
Here, <em>k</em> is the Coulomb constant.
The electric field <em>E</em> at a distance <em>r</em> from the source charge is given by,
......(2)
From equations (1) and (2)
Rewrite the expression for <em>ri.</em>
Substitute 75 J for <em>U</em>, for <em>E</em> and for <em>q</em>.
Rounding off to the nearest tenth, the the distance between the charge and the source charge is 2.2 m
The metal conducts the heat, which makes cooking easier.
C. explicit and implicit :)
Answer:
C.
Explanation:
the relative motion will be greater when it is travelling in opposite ditection