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A metallic rod held horizintally along east-west direction, is allowed to fall under gravity. will there be an emf induced at its end ? justify you answer

Posted by Sourav Dhami 8 years ago

CBSE > Class 12 > Physics

1 answers

Lalit Yadav 8 years ago

Yes. e = blvcos0 due to horizontal component of earth

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In both beta -ve and beta +ve decay processes, the mass number of a nucleus remains same whereas the atomic number Z increases by one in beta -ve decay and decreases by one in beta +ve decay. Explain, giving reason.. please please help

Posted by Yuthika Yadav 8 years ago

CBSE > Class 12 > Physics

2 answers

Madhav Rathod 8 years ago

Since the mass of B- particle is negligibly small and atomuc no. Inc by one due to loss of 1 negative charge Similarly for B+ decay a B particle is negligibly small and +1 charge is emitted . The mass no. Remains same but here the atomic no. Decreases by 1 due to lose of 1 positive charge. ?

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Madhav Rathod 8 years ago

I know

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How capacitor is used as filter for converting ac voltage to dc voltage in full wave rectifier. ?

Posted by Sachin Negi 8 years ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 8 years ago

It allows ac to pass through it as provide low rectance to it while hence ac passes through it when connected in parallel.

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three charge Q q and q are placed on the vartice of a right anlgled isosceles triangle perpendicular side of lenght a each . find the charge Q which the net electrostatic energy us zero

Posted by Dibya Modi 8 years ago

CBSE > Class 12 > Physics

0 answers

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Why electric line never cross to each other

Posted by Shivani Sonani 8 years ago

CBSE > Class 12 > Physics

5 answers

Madhav Rathod 8 years ago

Thank you Namami???

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Namami Shukla 8 years ago

.??What an answer madhav???

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Madhav Rathod 8 years ago

They never intersect just like saas bahu ya deraani jethaani?

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Namami Shukla 8 years ago

If electric field lines will cross each other then there will be two different values of electric field with their own individual direction at that single point which is not possible

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Sachin Negi 8 years ago

Because if they cross each other so their will be two directions of Electric field which is not possible.

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Circuit solve ni ho raa h ...kirchaurfs rule kaise use hoti h....??

Posted by Akash Agarwal 8 years ago

CBSE > Class 12 > Physics

1 answers

Madhav Rathod 8 years ago

Easy h yrr.Just concentrate. Pehle sabse easy vale krr. Phir sabse jyada difficult vale kr. Then moderate vale krr. Bas concept samj le . You will master in it.

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Happy holiiii guyzzz

Posted by Chauhan Girl 8 years ago

CBSE > Class 12 > Physics

2 answers

Madhav Rathod 8 years ago

#holiwithboards

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Namami Shukla 8 years ago

Same to u dear....

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A resistamce of R omega draws current from potentiometer as shown. It has total reaistance Ro ohmega A voltage V is supplied to the potentiometer derive exredsion for voltage acroass R

Posted by Bhavya Sharma 8 years ago

CBSE > Class 12 > Physics

0 answers

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Why cores of transformer are laminated. ?

Posted by Sachin Negi 8 years ago

CBSE > Class 12 > Physics

1 answers

Madhav Rathod 8 years ago

TO REDUCE EDDY CURRENT.

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What is displacement current in capacitor

Posted by Aditya Kumar 8 years ago

CBSE > Class 12 > Physics

1 answers

Madhav Rathod 8 years ago

The current came into existence when electric field and electric flux changes with time. ?

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nichrome and copper wire has same radius nd r connected in series .Current I is passes through them.Which of them gets heat more?

Posted by Noor Sran 8 years ago

CBSE > Class 12 > Physics

2 answers

Lalit Yadav 8 years ago

*resistivity

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Lalit Yadav 8 years ago

Nichrome wire will be heated more because it's resistance is more than copper wire

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Bohr magnetron

Posted by Tarushi Gaure 8 years ago

CBSE > Class 12 > Physics

1 answers

Yuthika Yadav 8 years ago

Unit of magnetic moment of an electron

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What is the effect of increasing resistance on the sensitivity of a potentiometer?

Posted by Naina Vashishth 8 years ago

CBSE > Class 12 > Physics

2 answers

Naina Vashishth 8 years ago

Actually first of all there are two methods of increasing the sensitivity of a potentiometer the first one is increasing the length of the wire and the second one is increasing the resistance in case the length of the wire is constant so you cannot change in length I am asking you what is the effect of increasing resistance on the sensitivity of Potentiometer

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Khushboo Rajvansh 8 years ago

On increasing resistance length Inc. =potential gradient Dec =sensitivity Inc.

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What is the frequency range of standard AM broadcast???

Posted by Yuthika Yadav 8 years ago

CBSE > Class 12 > Physics

1 answers

Naina Vashishth 8 years ago

540-1000kHz

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Angle of minimum deviation

Posted by Sunil Dhami 8 years ago

CBSE > Class 12 > Physics

1 answers

Prince Sharma 8 years ago

60°

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Relation between refractive index, wavelength and frequenciy?

Posted by Shamika Sahu 8 years ago

CBSE > Class 12 > Physics

0 answers

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First and second focal lengths of a spherical concave surface of refractive index n are F1 and F2 respectively.the relations between them will be?

Posted by Chandan Singh 8 years ago

CBSE > Class 12 > Physics

0 answers

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What is colums law derive

Posted by Shibu Tiwari 8 years ago

CBSE > Class 12 > Physics

1 answers

Jass Mangla 8 years ago

The force between the two point objects places at a distance is directly proportional to the product of the charges and is inversely proportional to square of its radius .............. Jo definition hai usse alphabet form me likhlo charges Ko q1n q2 lalo or radius Ko r proportionality constant k

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Explain different types of magnetic materials

Posted by Rakhee Sharma 8 years ago

CBSE > Class 12 > Physics