GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which among the following quantities is scalar?
A
Work
B
Force
C
Velocity
D
Acceleration
Explanation: 

Detailed explanation-1: -Examples: Displacement, velocity, force, weight, torque, momentum, acceleration, velocity, etc. EXPLANATION: Work is a scalar quantity. So option 4 is correct.

Detailed explanation-2: -Work has only magnitude so it is a scalar quantity. Velocity, Acceleration, and momentum have both direction and magnitude so they are not scalar quantities.

Detailed explanation-3: -scalar, a physical quantity that is completely described by its magnitude. Examples of scalars are volume, density, speed, energy, mass, and time. Other quantities, such as force and velocity, have both magnitude and direction and are called vectors.

Detailed explanation-4: -EXPLANATION: Current: The rate of flow of electric charge is called current. It is a scalar quantity. Hence option 1 is correct.

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