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Lesson Posted 1 day ago Learn Class 10 +2 Science Electricity

Ohm's law and its calculations

Viji Vasudevan

I am a proficient, qualified teacher and tutor with over 5 years of experience in teaching Maths, Science...

Ohm's Law states that voltage is directly proportional to current and resistance V=IR Here, V is Voltage I is Current R is Resistance Using the the mnemonics you can easily know by " Very Interesting Reading" so V=IR If we want to calculate then resistance means V/I =R Current means V/R... read more

Ohm's Law states that voltage is directly proportional to current and resistance 

V=IR

Here,

V is Voltage 

I is Current

R is Resistance 

Using the the mnemonics you can easily know by

" Very  Interesting Reading" so V=IR

 If we want to calculate then resistance means

V/I =R

Current means

V/R =I

 

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Answered 2 days ago Learn Thermodynamics

Is there any proof of second law of thermodynamics?

Palak A.

Pure and Applied Mathematics teacher

Yes, the second law of thermodynamics is based on empirical observation and has been proven in many ways, including: Entropy, heat flow, heat engines
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Answered 5 days ago Learn Thermodynamics

Which book should I prefer for studying Thermodynamics?

Palak A.

Pure and Applied Mathematics teacher

I highly recommend Schroeder: This book is a nice introduction and provides excellent physical intuition, but it does not skimp on the mathematics as well. It is also fairly self-contained and does not assume more than multivariable calculus and elementary mechanics.
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Answered on 08 Aug Learn Thermodynamics

What are the differences between the 1st and 2nd laws of thermodynamics?

Chandrabhan Vithal Zarekar

Yoga tutor at home teaching since 20years

The best books 1.Zemansky and Dittman- Heat and thermodynamics. 2.Kittle and Kromer- Thermal Physics 3.Enrico Fermi -Thermodynamics 4.Schroeder-Thermal Physics.
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Answered 5 days ago Learn Thermodynamics

What is the application of thermodynamics in civil engineering?

Palak A.

Pure and Applied Mathematics teacher

Thermodynamics is applied in civil engineering in a number of ways, including: Building design Thermodynamics is used to design buildings and bridges. Heat transfer Thermodynamics is used to determine the design of a building's fabric, and the systems needed to deliver the required thermal... read more
Thermodynamics is applied in civil engineering in a number of ways, including: Building design Thermodynamics is used to design buildings and bridges. Heat transfer Thermodynamics is used to determine the design of a building's fabric, and the systems needed to deliver the required thermal conditions. read less
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Answered 5 days ago Learn Thermodynamics

What are the best books on thermodynamics for physics students?

Palak A.

Pure and Applied Mathematics teacher

Thermodynamics books are of two kinds- One which shows the historical view and goes from the macro scale to the micro scale. Best book in that category is: Zemansky and Dittman— Heat and thermodynamics The other type (which is my preference) are books, that assume knowledge of basic Quantum... read more
Thermodynamics books are of two kinds- One which shows the historical view and goes from the macro scale to the micro scale. Best book in that category is: Zemansky and Dittman— Heat and thermodynamics The other type (which is my preference) are books, that assume knowledge of basic Quantum Mechanics and builds from the Micro to the macro scale Best book for that is: Kittle and Kromer — Thermal Physics read less
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Answered 4 days ago Learn Triangles

5. In triangle ABC , ∠A -- ∠B = 33 degree and ∠B -- ∠C = 180 degree.Find the measure of each angle of... read more
5. In triangle ABC , ∠A – ∠B = 33 degree and ∠B – ∠C = 180 degree.Find the measure of each angle of the triangle. (Answer: ∠A = 88° and ∠B = 55° and ∠C = 37°). read less

Debojit Sarkar

Be the better version of yourself

Let ∠C= x°, ∴ ∠B - x°=18° ⇒ ∠B = 18°+x° ......(i) Again, ∠A - (18°+x°)= 33° ⇒∠A = 33°+18°+x° ......(ii) And ∠A+∠B+∠C =180° ⇒51°+18°+3x°=180° ⇒3x°=(180°-69°) ⇒x°=37° ∴... read more

Let ∠C= x°,

∴ ∠B - x°=18°

⇒ ∠B = 18°+x°  ......(i)

Again, ∠A - (18°+x°)= 33°

⇒∠A = 33°+18°+x° ......(ii) 

And ∠A+∠B+∠C =180°

⇒51°+18°+3x°=180°

⇒3x°=(180°-69°)

⇒x°=37°

∴ ∠C=37°, ∠B= (37+18)=55°, ∠A=(55+33)= 88° [Ans.]

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Answered 4 days ago Learn Quadrilaterals

7. In a ΔABC, DE is parallel to BC and D is the mid-point of side AB. Find AE and BC if DE = 6 cm and EC = 5 cm.

Debojit Sarkar

Be the better version of yourself

In ΔABC, DE||BC ∴ (AD/DB)=(AE/EC) ........ ⇒1=(AE/EC)............ ⇒AE=EC= 5 cm And, ΔABC ≅ ΔADE ∴ (AD/AB)=(DE/BC)=1/2 ⇒ BC = 12cm
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Answered 4 days ago Learn Quadrilaterals

8. In a parallelogram ABCD find the measure of all the angles if one angle measures 68°.

Debojit Sarkar

Be the better version of yourself

In a parallelogram consecutive interior angles are supplementary, ∴If ∠A =68°, ∠B=(180°-68°)=112°, ∠C=68º, ∠D=112°
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Answered 3 days ago Learn Linear Inequalities

Solve the given inequality for real x : (x/4)< [(5x-2)/3 -(7x-3)/5] "

Manasi M.

Math tutor with 10 years experience

x/4 < ⇒ x < 4 ⇒ x < 4/15 ⇒ x < 4(4x -1)/15 ⇒ x - 16x/15 < -4/15 ⇒-x/15< -4/15 ⇒ -x < -4 ⇒ x > 4
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