Electric Current = Charge / Time Electric Current = charge flowing through any conductor per unit time.

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## What are the formulas in physics class 10?

- (1) Mirror formula, 1/v + 1/u = 1/f.
- (3) Lens formula 1/v – 1/u = 1/f.
- (1) Electric Current, I = q/t.
- (2) Potential difference, v = W/Q.
- (3) Ohm’s law, V = IR.
- (4) Resistivity, ρ = RA/L.
- (5) Conductivity = L/RA.
- (8) Electric power, P = W/t = VI = I2R.

## What are the 3 formulas in physics?

The three equations are, v = u + at. v² = u² + 2as. s = ut + ½at²

## What is mirror formula?

The relation between focal length of mirror, distance of the object and distance of the image is known as mirror formula. It is given by. u1+v1=f1.

## WHAT IS lens formula?

The Lens formula is applicable for convex as well as concave lenses. These lenses have negligible thickness. The formula is as follows: 1 v − 1 u = 1 f.

## Is physics easy or hard?

Students and researchers alike have long understood that physics is challenging. But only now have scientists managed to prove it. It turns out that one of the most common goals in physics—finding an equation that describes how a system changes over time—is defined as “hard” by computer theory.

## How do u calculate force?

What is the formula for force? The force formula is defined by Newton’s second law of motion: Force exerted by an object equals mass times acceleration of that object: F = m ⨉ a. To use this formula, you need to use SI units: Newtons for force, kilograms for mass, and meters per second squared for acceleration.

## How can I study physics?

## What is first law motion?

Newton’s first law: the law of inertia Newton’s first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

## What is V motion physics?

They are often referred to as the SUVAT equations, where “SUVAT” is an acronym from the variables: s = displacement, u = initial velocity, v = final velocity, a = acceleration, t = time.

## What is current formula?

Ohm’s law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR. An alternative statement of Ohm’s law is I = V/R.

## What is Ohm’s law class 10?

Ohm’s Law Statement : Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature, remain constant.

## What is the formula of energy?

Energy is defined as the capacity to do work. Formula. The energy stored in an object due to its position and height is known as potential energy and is given by the formula: P.E. = mgh.

## What is V in lens formula?

where u is the distance of the object from the lens; v is the distance of the image from the lens and f is the focal length, i.e., the distance of the focus from the lens. N.B. other sign conventions are sometimes used in the literature. = 2 6 − 1 6 = 1 6 So v = 6 cm.

## What is U and V in mirror?

The distance between the object and the pole of the mirror is called Object distance(u). The distance between the image and the pole of the mirror is called Image distance(v). The distance between the Principal focus and the pole of the mirror is called Focal Length(f).

## What is U and V in light chapter?

u is the object distance. v is the image distance. => magnification = height of image/height of object.

## What are the 6 types of lenses?

- The Standard Prime Lens. The Standard Prime Lens (or just Prime Lens) provides a fixed focal length.
- The Zoom Lens. Speaking of Zoom Lenses, the Zoom Lens might be your catchall lens.
- The Fisheye Lens.
- The Wide Angle Lens.
- The Telephoto Lens.
- The Macro Lens.

## What is the mirror formula Class 10?

Hence, the equation of mirror formula is 1f=1v+1u. Note:The reflecting part of the concave spherical mirror is that which caves inwards and the reflecting part of convex spherical mirror is one which caves outwards.

## What is the formula of convex mirror?

1/f= 1/u + 1/v. This equation is referred to as the mirror formula. The formula holds for both concave and convex mirrors.

## What is the hardest subject?

The hardest degree subjects are Chemistry, Medicine, Architecture, Physics, Biomedical Science, Law, Neuroscience, Fine Arts, Electrical Engineering, Chemical Engineering, Economics, Education, Computer Science and Philosophy.

## Is physics harder than math?

Physics might be more challenging because of the theoretical concepts, the mathematical calculations, laboratory experiments and even the need to write lab reports.

## Why is math so hard?

Because math involves using plenty of multi-step processes to solve problems, being able to master it takes a lot more practice than other subjects. Having to repeat a process over and over again can quickly bore some children and this may make them become impatient with math.

## What is the SI unit of force?

The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg. The second, unit of time — symbol s.

## What is the total momentum?

Momentum is equal to the mass of an object multiplied by its velocity and is equivalent to the force required to bring the object to a stop in a unit length of time. For any array of several objects, the total momentum is the sum of the individual momenta.

## What is SI unit of pressure and density?

The SI unit of density is kg/m3. kg/m 3 . Pressure is the force per unit perpendicular area over which the force is applied, p=F/A. p = F / A . The SI unit of pressure is the pascal: 1Pa=1N/m2 1 Pa = 1 N/m 2 .