Self induction.
Answer:-
Self induction of a circuit is defined as the property of the circuit, by virtue of which it tends to oppose a change in the strength of current, through it, by inducing an e.m.f. in itself.
angle of contact.
It is defined as the angle between the tangent to the liquid surface at the point of contact and solid surface inside the liquid is called as angle of contact The value of angle of contact depends upon (i) Nature of solid and liquid in contact (ii) Cleanliness of the surface in contact (iii) Medium above the free surface of liquid
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