area is a scalar

Pressure is a scalar quantity, because its direction is unique (normal to the area) and not to be specified. Barometer uses mercury. This is because, if water were used, then a longer glass tube would have to be used (10m, since10m of water column is required to balance the..

. The arrows give the direction of the conventional current. Current is a scalar quantity. The direction of conventional current in any circuit is the direction in which the positive charges flow. Mathematically, for a steady current across any area, where I is the current, and ..

When a force is applied on a surface in a direction perpendicular to the surface, the force is called thrust. Pressure on a solid surface is the thrust per unit area of the surface. Pressure is a scalar quantity. The SI unit of Pressure is N m - 2 or Pascal (Pa) Pressur..

Ampere's law is a useful relation that is analogous to Gauss's law. Ampere's law is a relationship between the tangential component of magnetic field at points on a closed curve and the net current through the area bounded by the curve. Ampere's law is formulated in terms of the line in..

Motion: Whenever a body changes its position continuously with respect to the position of other bodies around it then it is said to be in motion. Rest: An object which does not change its position with respect to its surroundings is said to be at rest. Distance: It is the actual length of t..

Summary - Motion: Whenever a body changes its position continuously with respect to the position of other bodies around it then it is said to be in motion. Rest: An object which does not change its position with respect to its surroundings is said to be at rest. Distance: It is the actual length of..

>If A, B and C are the matrices which can be multiplied then (a) Matrix multiplication is not commutative, i.e., AB BA (always) (b) Associative law holds good for matrix multiplication, i.e., (AB)C = A(BC) (c) Matrix multiplication is distributive with respect to addition A(B + C) = AB + AC or (A +..

>If A, B and C are the matrices which can be multiplied then (a) Matrix multiplication is not commutative, i.e., AB BA (always) (b) Associative law holds good for matrix multiplication, i.e., (AB)C = A(BC) (c) Matrix multiplication is distributive with respect to addition A(B + C) = AB + AC or (A +..