State Joules law of heating.

State Joules law of heating.
by

1 Answer

Answer :

Joules law : It state that the amount of heat generated (H) due to the flow of electric current through a resistance is directly proportional to 

1) Square of the current ( I2 ) 

2) Resistance ( R ) 

3) Time for which current flows ( t )

by

Related questions

Explain the construction and working of a photocell. State its any two applications.

Description : Explain the construction and working of a photocell. State its any two applications.

Last Answer :   Construction: 1. It consists of evacuated glass bulb having cathode (K) and anode (A). 2. The semi cylindrical cathode coated with photosensitive material from inner side. 3. The anode is platinum rod. 4. The ... in Burglar alarm. 4) It is used in TV set. 5) It is used in fire alarms.

State properties of ultrasonic waves.

Description : State properties of ultrasonic waves.

Last Answer : i) Frequency of these sound waves is more than 20kHz ii) Shorter wavelength iii) They carry high amount of sound energy iv) The speed of propagation of ultrasonic waves increases with increase in ... . x) Posses certain vibrations which are used as good massage action in case of muscular pain. 

State relation between linear velocity and angular velocity.

Description : State relation between linear velocity and angular velocity.

Last Answer : Relation between linear velocity and angular velocity is v = r ω 

State properties of nano material.

Description : State properties of nano material. 

Last Answer : i. Mechanical property. ii. Structural property. iii. Thermal property. iv. Electric property. v. Magnetic property. vi. Optical property.

Define Joule’s law.

Description : Define Joule’s law. 

Last Answer : The heat generated in conductor (resistance) while the flow of current is directly proportional to the square of the current, the resistance of the conductor and time for which the current flows. H = I2 R t/J ... equivalent of heat is equal to 4.2 Joules. In electricity H = 0.24 I2 R t calories. 

What is JOULE’S LAW ?

Description : What is JOULE’S LAW ?

Last Answer : JOULE’S LAW: The quantity of heat (H) generated in a conductor of Resistance (R), when a current (I) flows through it for a time (t), is directly proportional to: 1) The square of the current. 2) The resistance of the conductor and 3) The time for which the current flows.

For a body cooling in a draft, the rate of heat loss is proportional to the difference in temperature between the body and its surroundings.  a. Nemst Effect  b. Caloric Theory  c. Joule’s Law  d. Newton’s Law of Cooling

Description : For a body cooling in a draft, the rate of heat loss is proportional to the difference in temperature between the body and its surroundings.  a. Nemst Effect  b. Caloric Theory  c. Joule’s Law  d. Newton’s Law of Cooling

Last Answer : Newton’s Law of Cooling

The theory that heat consisted of a fluid, which could be transferred from one body to another, but not “created” or “destroyed”.  a. Clausius Theorem  b. Caloric Theory  c. Joules Law  d. Newton’s Law of cooling

Description : The theory that heat consisted of a fluid, which could be transferred from one body to another, but not “created” or “destroyed”.  a. Clausius Theorem  b. Caloric Theory  c. Joules Law  d. Newton’s Law of cooling

Last Answer : Caloric Theory

At Equilibrium, the radiation emitted must equal the radiation absorbed.  a. Boyle’s Law  b. Planck’s Law  c. Kirchoff’s Law  d. Joule’s Law

Description : At Equilibrium, the radiation emitted must equal the radiation absorbed.  a. Boyle’s Law  b. Planck’s Law  c. Kirchoff’s Law  d. Joule’s Law

Last Answer : Kirchoff’s Law

The volume of a confined gas is held constant, the pressure is directly proportional to the absolute temperature.  a. Charle’s Law  b. Boyle’s Law  c. Joule’s Law  d. Specific Heat

Description : The volume of a confined gas is held constant, the pressure is directly proportional to the absolute temperature.  a. Charle’s Law  b. Boyle’s Law  c. Joule’s Law  d. Specific Heat

Last Answer : Boyle’s Law

The acceleration of a particular body is directly proportional to the resultant force acting on it & inversely proportional to its mass.  a. Pascal's Law  b. Joule's Law  c. Newton's Law  d. None of the above

Description : The acceleration of a particular body is directly proportional to the resultant force acting on it & inversely proportional to its mass.  a. Pascal's Law  b. Joule's Law  c. Newton's Law  d. None of the above

Last Answer : Newton's Law

p1V1= p2V2  a. Charle's Law  b. Boyle's Law  c. Ideal Gas Law  d. Joule's Law

Description : p1V1= p2V2  a. Charle's Law  b. Boyle's Law  c. Ideal Gas Law  d. Joule's Law

Last Answer : Boyle's Law

Measurement of temperature is based on  (a) thermodynamic properties  (b) zeroth law of thermodynamics  (c) first law of thermodynamics  (d) second law of thermodynamics  (e) joule’s law.

Description : Measurement of temperature is based on  (a) thermodynamic properties  (b) zeroth law of thermodynamics  (c) first law of thermodynamics  (d) second law of thermodynamics  (e) joule’s law.

Last Answer : Answer : b

The statement that molecular weights of all gases occupy the same volume is known as  (a) Avogadro’s hypothesis  (b) Dalton’s law  (c) Gas law  (d) Law of thermodynamics  (e) Joule’s law.

Description : The statement that molecular weights of all gases occupy the same volume is known as  (a) Avogadro’s hypothesis  (b) Dalton’s law  (c) Gas law  (d) Law of thermodynamics  (e) Joule’s law.

Last Answer : Answer : a

According to which law, all perfect gases change in volume by l/273th of their original volume at 0°C for every 1°C change in temperature when pressure remains constant  (a) Joule’s law  (b) Boyle’s law  (c) Regnault’s law  (d) Gay-Lussac law  (e) Charles’ law.

Description : According to which law, all perfect gases change in volume by l/273th of their original volume at 0°C for every 1°C change in temperature when pressure remains constant  (a) Joule’s law  (b) Boyle’s law  (c) Regnault’s law  (d) Gay-Lussac law  (e) Charles’ law.

Last Answer : Answer : e

Which law states that the specific heat of a gas remains constant at all temperatures and pressures  (a) Charles’ Law  (b) Joule’s Law  (c) Regnault’s Law  (d) Boyle’s Law  (e) there is no such law.

Description : Which law states that the specific heat of a gas remains constant at all temperatures and pressures  (a) Charles’ Law  (b) Joule’s Law  (c) Regnault’s Law  (d) Boyle’s Law  (e) there is no such law.

Last Answer : Answer : c

Which law states that the internal energy of a gas is a function of temperature  (a) Charles’ law  (b) Joule’s law  (c) Regnault’s law  (d) Boyle’s law  (e) there is no such law.

Description : Which law states that the internal energy of a gas is a function of temperature  (a) Charles’ law  (b) Joule’s law  (c) Regnault’s law  (d) Boyle’s law  (e) there is no such law.

Last Answer : Answer : b

Which of the following laws is applicable for the behavior of a perfect gas  (a) Boyle’s law  (b) Charles’law  (c) Gay-Lussac law  (d) all of the above  (e) Joule’s law.

Description : Which of the following laws is applicable for the behavior of a perfect gas  (a) Boyle’s law  (b) Charles’law  (c) Gay-Lussac law  (d) all of the above  (e) Joule’s law.

Last Answer : Answer : d

Hydraulic machines work under the Principle of : (1) Newton’s Law (2) Joules Law (3) Pascal’s Law (4) Floatation Law

Description : Hydraulic machines work under the Principle of : (1) Newton’s Law (2) Joules Law (3) Pascal’s Law (4) Floatation Law

Last Answer : Pascal’s Law

Explain construction and working of Coolidge tube for production of X-ray.

Description : Explain construction and working of Coolidge tube for production of X-ray.

Last Answer : Construction:- It consist of hard glass bulb with cathode and anode as shown in fig. Cathode is a metal filament kept at negative potential to the filament. Target T consist of copper ... the filament current, the thermionic emission of electron hence intensity of X- rays can be controlled.

Distinguish between Seebeck and Peltier effect .

Description : Distinguish between Seebeck and Peltier effect .

Last Answer : Seebeck's effect Peltier effect When two dissimilar metals are joined together so that two junctions are formed and if one junction is heated and other is cooled then electric current flows ... difference. Amount of heat generated depends on pair of metals and current through it.

Explain process of transmission ultrasonic testing and pulse echo UT testing.

Description : Explain process of transmission ultrasonic testing and pulse echo UT testing.

Last Answer : Transmission UT method:- In this method two different tranducers are used, one acting as a transmitter and other acting as a receiver. The transmitter convers electrical pulse into sound signal. This sound ... fed to the input of CRT is called initial pulse as shown in following diagram.

factors on which NDT method can be selected.

Description : factors on which NDT method can be selected.

Last Answer : i) Codes or standard requirement ii) Specification of material to be tested, for example, nature of material, its size and shape iii) Type of disorders to be detected, also depend on nature ... is also depending on the equipments available for testing vi) Total cost required to test the material.

Explain production of ultrasonic wave by using piezoelectric method.

Description : Explain production of ultrasonic wave by using piezoelectric method. 

Last Answer : Principle: When the electric field is applied across the crystal its dimensions changes and when alternating PD is applied across crystal then the crystal sets into elastic vibrations  Working ... of crystal. Then the crystal sets into resonance vibration and ultrasonic waves are produced. 

applications of X-rays

Description : applications of X-rays

Last Answer : 1. X- rays are used to detect the cracks in the body of aero plane or motor car. 2. X- rays are used to detect the manufacturing defects in rubber tyres or tennis ball in quality control. 3. ... cure diseases like cancer. 11. X - Rays are used to detect bullets position inside the body.

Define Work function and Stopping potential.

Description : Define Work function and Stopping potential.

Last Answer : Work Function: It is the minimum energy required just to emit or detach or knock the electron from the metal surface.  Stopping potential: It is the negative potential of photoelectric cell at which photoelectric current becomes zero.

Explain variation of thermo e.m.f. with temperature.

Description : Explain variation of thermo e.m.f. with temperature. 

Last Answer : For a given thermocouple , the temperature of one junction is placed at 00C and temperature of other junction is increased by providing heat. The emf generated is measured with the help ... increases and reaches to maximum value and thereafter emf decreases, becomes zero and reverses its sign.

Define centripetal force and centrifugal force

Description : Define centripetal force and centrifugal force

Last Answer : Centripetal force - It is defined as the force acting along the radius towards the center of the circular path, which keeps the particle in uniform circular motion.  OR  Centripetal force ... experiences force which is along the radius and away from the center is called Centrifugal force.

Classify the solids into conductors, semiconductors and insulators on the basis of band theory of solids.

Description : Classify the solids into conductors, semiconductors and insulators on the basis of band theory of solids. 

Last Answer : In conductors there is no energy gap between valance band and conduction band, they are overlapped on each other. So electrons can jump from valance band to conduction band easily and material ... band when some amount of energy is supplied to it. Therefore insulators cannot conduct the current.

What is Nano-technology? Define nano scale.

Description : What is Nano-technology? Define nano scale. 

Last Answer : Nanotechnology:-The branch of engineering that deals with things having the dimensions smaller than 100 nm is called nanotechnology.  Nanoscale:-The scale range from 1nm to 100 nm is called nanoscale. 

Give applications of LASER.

Description : Give applications of LASER. 

Last Answer : i) Lasers are used for engraving and embossing of printing plates For example- number plate, name plate etc., ii) Lasers are used in cutting, drilling and welding metals. iii) Lasers are used in ... fiber from one computer to other viii) Lasers are used to find flaws or defect in material. 

Give the full form of LASER.

Description : Give the full form of LASER. 

Last Answer : Full form :  Light Amplification by Stimulated Emission of Radiation.

What do you understand by the units of electrical energy? How many joules of energy is consumed if the electrical meter shows 200 units of energy ? -Science

Description : What do you understand by the units of electrical energy? How many joules of energy is consumed if the electrical meter shows 200 units of energy ? -Science

Last Answer : Unit of electrical energy is defined as the energy spent or used by electrical appliance at the rate of 1 kw For (t) hours 1 kwh = 1000 W *3600s ... = 400* 3.6*10^6 J = 144*10^7 J

A body is moving with velocity 4 m/s , possesses 56 Joules of Kinetic Energy. The momentum of body will be equal to -Physics

Description : A body is moving with velocity 4 m/s , possesses 56 Joules of Kinetic Energy. The momentum of body will be equal to -Physics

Last Answer : (d) 28 kgms-1

15 kcal = how many joules ?

Description : 15 kcal = how many joules ?

Last Answer : 15 kcal = 62,600 joules.

How many joules is equal to one watt hour ?

Description : How many joules is equal to one watt hour ?

Last Answer : One watt hour equals 3600 J.

How many joules is equal to 1 kilowatt hour ?

Description : How many joules is equal to 1 kilowatt hour ?

Last Answer : 1 kilowatt = 1000 joules.

How many joules is equal to one calorie ?

Description : How many joules is equal to one calorie ?

Last Answer : 1 calorie = 4.2 joules.

How many calories in 100 joules ?

Description : How many calories in 100 joules ?

Last Answer : 100 juices 23.80 calories.

1 Cal How many joules ?

Last Answer : 1 Cal = 4.18 J.

How many joules of energy is consumed when one watt power works in 1 second ?

Last Answer : One watt power working in 1 second will consume 1 joule of energy.

How many joules is 2 newtons through 10 metres?

Description : How many joules is 2 newtons through 10 metres?

Last Answer : Feel Free to Answer

How many joules in a aaa battery?

Description : How many joules in a aaa battery?

Last Answer : What is the answer ?

How A 500 g piece of iron changes 7 C when heat is added. How much heat energy in joules is produced due to this change in temperature?

Description : How A 500 g piece of iron changes 7 C when heat is added. How much heat energy in joules is produced due to this change in temperature?

Last Answer : Need answer

If 1.000 cal 4.184 Joule how many Joules are in 41.841 cal?

Description : If 1.000 cal 4.184 Joule how many Joules are in 41.841 cal?

Last Answer : Need answer

How many joules does a kilogram of wood?

Description : How many joules does a kilogram of wood?

Last Answer : Need answer

How many joules are required to boil 21.1 g of water at 100 C?

Description : How many joules are required to boil 21.1 g of water at 100 C?

Last Answer : The needed heat is 47,65 Joules.

How many joules of heat are necessary to melt 500 g of ice at it's freezing point?

Description : How many joules of heat are necessary to melt 500 g of ice at it's freezing point?

Last Answer : Heat required to melt 1 g of ice at 0°C is approximately 80 cal . This is also called latent heat of fusion of ice.

How many joules of work would be accomplished if you moved a 200-kg rock 10 meters?

Description : How many joules of work would be accomplished if you moved a 200-kg rock 10 meters?

Last Answer : 190

Holding 25-N bag of sugar 1 meter above the floor requires how many joules of work?

Description : Holding 25-N bag of sugar 1 meter above the floor requires how many joules of work?

Last Answer : 24