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What is ohm's low

Posted by Resham Kumar 7 years, 1 month ago

1 answers

On the basis of his experimental observations, a German Physicist George Simon Ohm derived a relationship between electric current(I) and potential difference(V) in 1828. This relationship is known as OHM'S LAW and can be stated as follows :- " The current flowing through a conductor is directly proportional to the potential difference applied across its ends, provided the temperature and other physical conditions remain unchanged. " Thus, we can say V= RI, where R is the proportionality constant and is called as the 'resistance of the conductor'.

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RLC circuit

Posted by Maruf Ansari 7 years, 1 month ago

CBSE > Class 12 > Physics

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What is the slope of the equation I=(1/R)V+0

Posted by Siva Dasan 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prerna Kumari 7 years, 1 month ago

1/R

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A parallel beam of light strike a glass of refractive index 3/2 sphere of 20cm diameter. Where will it get focused on the other side of the sphere

Posted by Sachin Chauhan 7 years, 1 month ago

CBSE > Class 12 > Physics

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what is the slope of the equation V=IR+0

Posted by Siva Dasan 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Rutu Gond 7 years, 1 month ago

This equation is of the form...y=mx+c, where m is the slope.....so here m=I....hence the slope is ....I..current

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What is meterbreze

Posted by Manoj Shrivastav 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Aj Style 7 years, 1 month ago

It is a device used to measure unknown resistance

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A circular of radius R carries current I , the magnetic field at its centre is B. At what distance from the centre on the axis of the coil the magnetic field will be B/8 ?

Posted by Øshèen Gray 7 years, 1 month ago

CBSE > Class 12 > Physics

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A projectile is given an initial velocity of i+2j . The cartesian equation of its path is(g=10m/s2)

Posted by Bhawna Saini 7 years, 1 month ago

CBSE > Class 12 > Physics

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Relative velocity of an object is Vb=4km/H Va=3km/H Find relative velocity

Posted by M Javed 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prerna Kumari 7 years, 1 month ago

Relative velocity = Vb - Va = (4-3) km/H = 1km/H

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What is grazing emergence

Posted by Vishwajeet Gupta 7 years, 1 month ago

CBSE > Class 12 > Physics

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What is grazing

Posted by Vishwajeet Gupta 7 years, 1 month ago

CBSE > Class 12 > Physics

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Define ampere's circuital law

Posted by Vishwajeet Gupta 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Yogesh Yadav 7 years, 1 month ago

It state that the length integral of magnetic field around any close path in free space or vaccume is equal to the M° times the total current flowing through the close path

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Yogesh Yadav 7 years, 1 month ago

: The line integral of the magnetic field around some closed loop is equal to the times the algebraic sum of the currents which pass through the loop.

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A bulb of resistance of 10 ohm connected to an inductor of inductance L os in series with a AC marjed 100 volt 50 hz,if the hase angle between the voltage and current is pie upon 4 radian caculate the value of L

Posted by Harshit Gaur 7 years, 1 month ago

CBSE > Class 12 > Physics

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Prof of coulambs law from gauss theroum

Posted by Himanshu Rai 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prerna Kumari 7 years, 1 month ago

Let us consider a spherical gaussian surface having charge 'q' at the centre and charge 'Q' at the circumference Since, electric flux is scalar product of electric intensity and area vector Therefore, Electric flux = E (due to q at Q)•A(at Q) =EAcos0 = EA = E(4πr^2) Now, from gauss law Electric flux =charge enclosed/8.85 ×10^(-12) = q/8.85×10^(-12) Therefore, E(4πr^2) = q/8.85×10^(-12) E = q/4πr^2 × 8.85×10^(-12) = Kq/r^2 Force expericed by Q , F = QE = Q(kq/r^2) =kqQ/r^2

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Can u plse give 1 line definitions of resistance, resistor and resistivity

Posted by Pp Ss 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Yogita Ingle 7 years, 1 month ago

Resistance is the property of the conductor which opposes the flow of current (I) flowing through it at given voltage (V). i.e. R = V/I
Resistor is the equipment/component used to add resistance in the given circuit.
Resistivity is a measure of the resistance of a given size of a specific material to electrical conduction.

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Qs to all 12thies First of all how many of u are also studying in some private institutions

Posted by Shruti Mishra 7 years, 1 month ago

CBSE > Class 12 > Physics

5 answers

Shruti Mishra 7 years, 1 month ago

Aj style nitish n arihant my qs is to u !!! Do u think that schooling + coaching is little bit tough n dummy is btter n convinient??

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Aj Style 7 years, 1 month ago

Ya studying at private institution

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Nitish Sharma 7 years, 1 month ago

Studying at private institute......

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Arihant Yadav 7 years, 1 month ago

I'm studying also studying there .

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Gaurav Tiwari 7 years, 1 month ago

I'm not studying in any private institute.

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What are the uses of transformers

Posted by Charanjit Singh Singh 7 years, 1 month ago

CBSE > Class 12 > Physics

2 answers

Yogesh Yadav 7 years, 1 month ago

1.Use in inductive furnace 2. Use in welding purpose

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Sachin Chandela 7 years, 1 month ago

Conversion of AC into DC current

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Sketch the electric lines of force due to point charges q>0,q<0 and fir uniform field?

Posted by Aditi Sharma 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Prerna Kumari 7 years, 1 month ago

For q>0, <-- q --> For q<0, --> q <--

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The unit of length convenient on the nuclear scale is a fermi :1f=10

Posted by Mohammad Hussain 7 years, 1 month ago

CBSE > Class 12 > Physics

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to multiply perpendicular insulated wires carrying equal current I intersect at origin then the resultant magnetic field induction at point P two, three will be

Posted by Dsd Zss 7 years, 1 month ago

CBSE > Class 12 > Physics

0 answers

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A charge q is moving in a circular path of radius r around another charge q calculate amount workdone

Posted by Bibhuti Khatua 7 years, 1 month ago

CBSE > Class 12 > Physics

1 answers

Gurlal Monga 7 years, 1 month ago

Workdone will be zero as radius around the charge will remain the same and it will become an equipotential surface and workdone in moving a charge in equipotential surface is zero

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State principle of potentiometer?

Posted by Raman Bhardwaj 7 years, 1 month ago

CBSE > Class 12 > Physics