Some other properties of electric charge Charge is a scalar quantity. Charge is transferable, they transfer from one body to another. Like charges repel each other and unlike charges attract each other. Charge is always associated with mass.
What are electric field lines 12 notes?
Electric field lines always point away from a positive charge and towards a negative point. In fact, electric fields originate at a positive charge and terminate at a negative charge. Also, field lines never cross each other. If they do, it implies that there are two directions for the electric field at that point.
What are the important topics in electric charges and fields?
Answer: The main concepts which students will study in electric charges and fields are electric field, electric field lines, electric field due to a point charge, torque on a dipole in uniform electric field, gauss theorem and its application.
What is electric charge 12th physics?
Electric charge is the basic physical property of matter that causes it to experience a force when kept in an electric or magnetic field. An electric charge is associated with an electric field, and the moving electric charge generates a magnetic field.
What is the SI unit of charge?
coulomb, unit of electric charge in the metre-kilogram-second-ampere system, the basis of the SI system of physical units. It is abbreviated as C. The coulomb is defined as the quantity of electricity transported in one second by a current of one ampere.
What is called electric flux?
electric flux, property of an electric field that may be thought of as the number of electric lines of force (or electric field lines) that intersect a given area. Electric field lines are considered to originate on positive electric charges and to terminate on negative charges.
Is charge a scalar or vector?
Charge has only magnitude but no direction. So, charge is a scalar quantity.
Which chapter is most important for class 12 physics?
- CBSE Class 12 Physics Chapter wise Previous Year Questions With Solutions. The following chapters mentioned below are the most important chapters for CBSE Class 12 :
- Optics:
- Electronic Devices:
- Communication Systems:
- Atoms and Nuclei:
- Electrostatics:
- Dual Nature of Matter:
- Magnetism:
Is class 12 physics tough?
Most of the students find the Class 12 Physics subject difficult. This is also due to the vast syllabus and derivations that are there in both parts of the NCERT class 12 Physics book.
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 are the 5 properties of charge?
- Like charges repel whereas unlike charges attract.
- the smallest charge that can exist is the charge on electron or on proton i.e,.
- Charge possessive additive property.
- Charge of an isolated body of a system remains conserved.
- Charge is everquantized.
- Charge is invariant.
What is the smallest unit of charge?
The MKS unit of charge is the Coulomb, while the cgs unit is the electrostatic unit, or esu. The smallest measurable unit of charge is that carried by the electron, where Coulomb or esu.
What is the law of coulomb?
Definition of Coulomb’s law : a statement in physics: the force of attraction or repulsion acting along a straight line between two electric charges is directly proportional to the product of the charges and inversely to the square of the distance between them.
What is meant by 1 coulomb?
Coulomb is the SI unit of electric charge which is equal to the amount of charge transported by a current of one ampere in one second. It can be also, property of a matter due to which electrical and magnetic effects are produced. It is denoted by C. Mathematically, 1 Coulomb = 1 Ampere × 1 second.
What is the symbol for flux?
It is denoted by Φ or ΦB. The CGS unit is the Maxwell and the SI unit of magnetic flux is the Weber (Wb).
What is the SI unit of weber?
In physics, the weber (/ˈveɪb-, ˈwɛb. ər/ VAY-, WEH-bər; symbol: Wb) is the unit of magnetic flux in the International System of Units (SI), whose units are volt-second. A magnetic flux density of one Wb/m2 (one weber per square metre) is one tesla.
What is negative flux?
Negative Flux means a net inward flow of field lines through a given surface. The negative Flux is equal to the positive Flux’s magnitude. Flux is the act of flowing in or flowing out. For example, if the lines of force on a surface are inward flowing, this is a negative Flux.
What is a minimum charge?
A minimum finance charge is a monthly credit card fee that a consumer may be charged if the accrued balance on the card is so low that an interest charge under the minimum would otherwise be owed for that billing cycle. Most credit cards have a minimum finance charge of $1.
Is AC current a vector?
Though voltage and current in ac circuit are represented by phasors – rotating vectors, they are not vectors themselves. They are scalar quantities.
Which quantity is impulse?
Impulse is the average force over the time interval t. Momentum is the product of mass and velocity therefore it is a vector quantity. Since impulse depends on momentum, it is also a vector quantity.
How can I study physics in 10 days?
- Make sure you solve previous year Physics question papers.
- You should prepare short notes of important derivations, practice diagrams (device, circuit etc.)
- Students are advised to be attentive and careful while solving a question or problem.
Which is the hardest chapter in class 12 physics?
- Heat and Thermodynamics. It is probably the most difficult yet one of the important topics for JEE Main Physics.
- Mechanics. JEE Main Physics is not all about theory and equations.
- Electrostatics and Magnetism.
- Current Electricity.
- Optics.
- Modern Physics.
- Electromagnetic Induction.
Which is the most difficult chapter in class 12 physics?
SHM, WAVES ( ELECTROMAGNETIC WAVES) , MODERN PHYSICS AND EMI are toughest topics in physics because it’s little bit hard to imagine these concepts in head.
Is Term 2 physics easy?
As per the reactions received from the students, the Physics Class 12th Term-II paper was easy. There was nothing out of the syllabus. Many questions were straight from NCERT Books.
How can I get good marks in Plus One?
Make it a point to solve atleast one paper every day during the month you have kept apart for revision and practicing question papers. Another important thing is that don’t study anything new at the last minute and this can create confusions.