CBSE > Class 12 > Physics | CBSE Board | Homework Help

Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals are malleable and ductile and are, in general, denser than the other elemental substances.

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A rod of length l is moved horizontally with a velocity v perpendicular to its lenghth through a region in which uniform magnetic field is acting vertically downwards.derieve an expression for the emf induced across the ends of the rod.how does one understands this motional emf by evoking the lorentz force acting on the free charge carriers of the conductor.explain.

Posted by Rishika Sinha 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Aisha Grewal 7 years, 10 months ago

e=Blv.......may be

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What you mean by interference

Posted by Aayisha Azeez 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Aisha Grewal 7 years, 10 months ago

It is a phenomenon in which two waves superimpose to form a resultant wave of equal, less, greater magnitude

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What you mean by wave front

Posted by Aayisha Azeez 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Ritu Dhanda 7 years, 10 months ago

Continuous locus of all the particle which are vibrating in same phase.....

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Express transformation ratio in terms of voltage.?

Posted by Shreya Upadhyay 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 7 years, 10 months ago

Ns/ Np= Vs/ Vp S - secondary coil P- primary coil

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How to d.c voltage into a.c voltage?

Posted by Taran Dhaliwal 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Aisha Grewal 7 years, 10 months ago

By using a converter or a power inverter

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Yha pr kaun Lucknow s h?

Posted by Lekha Raj 7 years, 10 months ago

CBSE > Class 12 > Physics

3 answers

Anushka Tripathi 7 years, 10 months ago

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Lekha Raj 7 years, 10 months ago

Oye JB shant rha kro

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Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

Vineet kumar gupta

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relation between uo and Eo

Posted by Sukhvinder Chima 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Prakhar Gupta 7 years, 10 months ago

c = 1/(uo.Eo)^1/2

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ranges and wavelength of electromagnetic waves

Posted by Sukhvinder Chima 7 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

??katta chalaya , tatta tudwaya...

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Amit Kumar 7 years, 10 months ago

20 km bereeta desi katta 10 metres back fire you dead or agaey wala dead. nice range nice

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Electricity

Posted by Vishal Rana 7 years, 10 months ago

CBSE > Class 12 > Physics

0 answers

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Yrr viva h transformer k kuch imp question bta do koi

Posted by Vikas Pandey 7 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 7 years, 10 months ago

???nice one

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Amit Kumar 7 years, 10 months ago

transformer admi to car , car to admi too much fun gadar... dark of the moon ......angreji movie

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if a positive charge is shifted from a low potential region to a high potentiall region, the electric potential: (a)decreases (b)increases (c)remains the same (d)may increase or decrease

Posted by Hitesh Kumar 7 years, 10 months ago

CBSE > Class 12 > Physics

4 answers

Hitesh Kumar 7 years, 10 months ago

Okay thank you ??

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Shalini Tiwari 7 years, 10 months ago

The initial PE of q was q*V1 and the final is q*V2, so the change is q*V2 - q*V1 = q(V2 - V1) Since V2 > V1, the result is +ve Hence potential energy will increase.

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Hitesh Kumar 7 years, 10 months ago

How explain your answer? ??????increase toh mujhe bhi pata hai ??

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Shalini Tiwari 7 years, 10 months ago

It will increase

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What is brownian movement

Posted by Vikas Pandey 7 years, 10 months ago

CBSE > Class 12 > Physics

5 answers

Vineet Kumar Gupta 7 years, 10 months ago

*it provides stability to colloidal sol

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Amit Kumar 7 years, 10 months ago

thank you thank you

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Hitesh Kumar 7 years, 10 months ago

Your welcome bhai????

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Vikas Pandey 7 years, 10 months ago

Ty bhai

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Hitesh Kumar 7 years, 10 months ago

Brownian motion is the continuous random movement of small particles suspended in a fluid, which arise from collisions with the fluid molecules.

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What is quality factor

Posted by Vikas Pandey 7 years, 10 months ago

CBSE > Class 12 > Physics

3 answers

Anjali Sharma 7 years, 10 months ago

Who is this Amit Kumar?

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Aisha Grewal 7 years, 10 months ago

Sharpness of peak measured quantitatively called Q FACTOR.. dimensionless,,, inversely proportional to resistance

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Amit Kumar 7 years, 10 months ago

quality toh hamaran bhass kei doodhan mei hai top top

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Important topics Bata do yaar koe

Posted by Gaurav Shankar 7 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Amit Kumar 7 years, 10 months ago

hum nei kai paer banai sa

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What are the limitations of coulomb's law in electrostatics?

Posted by Preet Komal 7 years, 10 months ago

CBSE > Class 12 > Physics

2 answers

.Ismat .Jamil 7 years, 10 months ago

1 applicable for point charge of size much lesser than distance. 2.applicable for spherical charged body with uniform charge distribution. 3.distance between charge particles be from 10^-5 m to at least several km. No remarks on distance less than 10^-5 m & greater distance

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Amit Kumar 7 years, 10 months ago

pata nah

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What is coercivity of a magnet?

Posted by Sheetal Wankhede 7 years, 10 months ago

CBSE > Class 12 > Physics