Physics Elective 3 1 Chapters 1 and 2 Electrostatic Field, Constant Current Formulas

1. Ohm's law i=u r

2. The law of resistance r= l s

3. Ohm's law for closed circuits i=e (r+r)4, Joule's law q=i 2rt

5. Electric work w=qu=uit

6. The current intensity is defined by i=q t

7. Characteristics of series circuit.

The current relation i=i1=i2=....in voltage relation u=u1+u2+.un resistance relation r=r1+r2+.RN8, the law of parallel circuits.

The current relation i=i1=i2=....in voltage relation u=u1+u2+.=un resistance relation 1 r=1 r1+1 r2+.1/rn

Coulomb's law.

f is equal to (k times q1

q2) Divide r to the 2nd power.

f for between them.

The amount of electricity carried by the electrostatic force Q1Q2 charge.

k is the electrostatic constant and r is the distance.

High School Physics Elective 3-1 Formula.

Commonly used formulas in electromagnetism.

Electric field strength: e=f q

Point charge electric field strength: e=kq r

Uniform electric field: e=u d

Electric potential energy: e

q Potential difference: u

Work done by electrostatic force: w = qu

Capacitance definition: c=q u

Capacitance: c = s 4 kd

The motion of charged particles in a uniform electric field.

Acceleration uniform electric field: 1 2*mv quv

2 qu m deflection uniform electric field:

Vertical acceleration: a=qu md

Vertical displacement: y=1 2*at

1/2*(qu/md)*(x/v₀)²

Deflection angle: =v v =qux md(v).

e=f qw=ep1-ep2, the work done by the electric field force is equal to the decrease in the electric potential energy wab=quab, and the work done by the electric field force from a to b is equal to the product of the electric potential difference between the charge charge and ab.

ep1=q 1, the potential energy of q at point 1 is equal to the product of q and the potential at this point.

The potential difference UAB = a- b The potential difference between the two points of AB is equal to the difference of the potential of the two points of AB.

There are no basic quantities, they are all derived quantities, which are the key knowledge of this chapter.

e=f q, the definition of electric field strength.

w=ep1-ep2, the work done by the electric field force is equal to the decrease in the electric potential energy wab=quab, and the work done by the electric field force from a to b is equal to the product of the electric potential difference between the electric charge and ab.

ep1=q 1, the potential energy of q at point 1 is equal to the product of q and the potential at this point.

The potential difference UAB = a- b The potential difference between the two points of AB is equal to the difference of the potential of the two points of AB.

There are no basic quantities, they are all derived quantities, which are the key knowledge of this chapter.

w=ep1-ep2, the work done by the electric field force is equal to the decrease in the electric potential energy wab=quab, and the work done by the electric field force from a to b is equal to the product of the electric potential difference between the electric charge and ab.

ep1=q 1, the potential energy of q at point 1 is equal to the product of q and the potential at this point.

The potential difference UAB = a- b The potential difference between the two points of AB is equal to the difference of the potential of the two points of AB.

e=f qep is the work of moving the unit charge from the point of zero potential energy to the electric field force at this point.