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what is difference between physical and scalar quantity

Posted by Raj Roshan 7 years, 4 months ago

1 answers

Rishabh Sahu 7 years, 4 months ago

Physical quantities are all those quantities that can be measured ,they may be vector or scalar ,but scalar quantities compulsorily don't have any direction according to their definition. Physical quantities may or may not have direction.

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Sign cobvention table for concave and convex lences

Posted by Vanshika Gahlawat Gahlawat 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

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Why field lines do not form close loops

Posted by Neha Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Anonymous A 7 years, 4 months ago

Because Field line emerge from positive charge and terminate at - ve charge

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Digvijay More 7 years, 4 months ago

Because they form open loop

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Four capacitor are connected calculated the equivalent b/w the point x andY

Posted by Riya Khanna 7 years, 4 months ago

CBSE > Class 12 > Physics

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Two dipoles made from charge +_ q and +- q respectively have equal dipole moments give the ratio between the separation of these two pairs of charges , angle between the dipole axis of these two dipole.

Posted by Varsha Rajput 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Neha Singh 7 years, 4 months ago

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Why charge is of two types

Posted by Shivam Kumar 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Digvijay More 7 years, 4 months ago

Becoz charges loves variation

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What is ohms law and it's conclusion

Posted by Mohd Rashid 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Anonymous A 7 years, 4 months ago

According to ohms law current flowing in a conductor is directly proportional to the potential difference across it. i.e I proportional to V

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Why on connecting the two end points of a circuit with each other burns the circuit

Posted by Urselah Gabroo 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Anonymous A 7 years, 4 months ago

Becoz + ve terminal touches the - ve terminal and there is a short circuit

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Why field lines do not form closed loops?

Posted by Ravi Pal 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

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How to got full marks in physics

Posted by Rashmi Jaiswal 5 years, 5 months ago

CBSE > Class 12 > Physics

1 answers

Vennila Murali 7 years, 4 months ago

Take a good guide.I would prefer s.l arora .It costs Rs 995 in amazon.you would have everything in it. Atleast spend 1 hour for physics. Learn your daily portion .half an hour for theory and half an hour for numericals. Surely you can get very very good marks.?????☺☺☺☺

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What is Q

Posted by Abhay Rajput 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Rizul Thakur 7 years, 4 months ago

Charge

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Eletric field due to an eletric dipole at a point on axial line

Posted by Jyoti Goswami 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Aman Kumar 7 years, 4 months ago

For axial line electric field is equals to 1upon 4π epsilon naught * 2pr divided by (r square-a square)

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Difference between potential difference and EMF

Posted by Nav Deep 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 7 years, 4 months ago

Nothing just EMF is maximum potential difference ???

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What would be the interaction force between two copper sphere each of mass1gm separated by distance 1m if total electronic charge is then differed from the total charge of nuclei

Posted by Neha Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

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What is the difference between resistance and resistivity?

Posted by Priyanshu Sharma 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 7 years, 4 months ago

Resistance is the obstruction offered to the flow of current by a conductor. Resistivity is the obstruction offered to the flow of current by UNIT AREA OF the conductor. So basically, resistance is the property of the object (say a copper wire), whereas resistivity is the property of the substance (copper). And so resistance depends upon the properties of the object. Whereas resistivity depends upon the properties of the metal. ???

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Why in sphere charge inside is 0 but in cylinder not 0

Posted by Neha Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 7 years, 4 months ago

Bcz. of no electric field ???

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Agr kisi object ko liquid m dubou to vha kitne force kam krege ¿¿¿¡¡¡

Posted by Jin Kazama 7 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Jin Kazama 7 years, 4 months ago

Partial pressure ki esi ki tsi ,upthrust and downward force and what force ???

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Ritik Kumar 7 years, 4 months ago

Partial presure ...

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What is upthrust ¿¿¿

Posted by Jin Kazama 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Princepal Singh 7 years, 4 months ago

Upward force

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What are the important derivations in atomic and nuclear physics?

Posted by Dharshika As 7 years, 4 months ago

CBSE > Class 12 > Physics

4 answers

Dharshika As 7 years, 4 months ago

Can u please type in english

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Dharshika As 7 years, 4 months ago

I can't understand what u mean to say

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Jin Kazama 7 years, 4 months ago

Jo tumhe ata hai vo important nhi blki jo tumhe nhi ata vo sub important hai ???

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Dharshika As 7 years, 4 months ago

For cbse board exams

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What is difference b/w E and Eo

Posted by Arpita Sharma 7 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Jin Kazama 7 years, 4 months ago

It will be better to use this ε ???

1Thank You

Kim Jong 7 years, 4 months ago

Hii tanisha E is called epsilon and it is known as absolute permitivity of medium but Enot is absolute permitivity of air or vacuum

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Write coulomb's law

Posted by Rahul Kumar 5 years, 5 months ago

CBSE > Class 12 > Physics

2 answers

Jin Kazama 7 years, 4 months ago

F=(kq1q2)/r² , here k=1/4πε ???

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Trashti Gupta 7 years, 4 months ago

F=1/4*3.14Eo.q1q1/r^2

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Write coulombs law

Posted by Rahul Kumar 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Tannya Pande 7 years, 4 months ago

It states that the force of attraction or repulsion bet\w two stationary point charge is directly proportional to the product of the magnitude of the two charges .

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What is the mean of gauss theorem

Posted by Ved Payla 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Jin Kazama 7 years, 4 months ago

It means Φ=q/ε0 ???

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"Gauss law in electrostatic is true for any closed surface, no matter what it's shape or size is". Justify the statement

Posted by Shivam Jaiswal 7 years, 4 months ago

CBSE > Class 12 > Physics

2 answers

Jin Kazama 7 years, 4 months ago

Equipotential surface ???

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Durgesh Tiwari 7 years, 4 months ago

Because electrical field is same at all point in a closed surface .i.e.∆E ×ds is equal at any point in closed surface

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Calculate the coulomb force between two alpha particles seprated by a distance 3.2*10^-15 in air

Posted by Raghav Yadav 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Saloni S 7 years, 4 months ago

Charge on alpha particle=2e=2*1.6*10^-19 =3.2*10-19C Distance=3.2*10-15th Applying formula , F=1/4pie EPSILON NOT q1*q2/r*2 After putting the values in above formula we get F = 90 N

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What is continous charge distribution??

Posted by Niharika Srivastav 7 years, 4 months ago

CBSE > Class 12 > Physics

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Two materials germanium and aluminum are kept between 300k to 600k. What will be the effect on the resistivity

Posted by Anurag Saini 7 years, 4 months ago

CBSE > Class 12 > Physics

0 answers

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What is difference between electrical and electronic ???

Posted by Arpita Sharma 4 years, 3 months ago

CBSE > Class 12 > Physics

1 answers

Sia ? 4 years, 3 months ago

Electrical and electronic engineering are not just two names for the same thing! Mechatronic engineer Michael Chandler explains the differences.

Electrical and electronic engineering may sound similar, but they are very different. Both involve moving electricity around a circuit to power useful products and machines, but that is where the similarity ends!

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Why surface density of a conductor is different at different points?

Posted by Parveen Esram 7 years, 4 months ago

CBSE > Class 12 > Physics