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a) Heat produced or absorbed at a junction is proportional to the current by the junction.
b) This effect is produced when current is passed by junction of suitable materials.
c) It is reversible effect.
d) Heat exchange depends upon nature of conductors and temperature of the junctions.
e) It can be heating as well as cooling effect.
Electrostatic field is caused by stationary charge, Induced field is caused by time-varying magnetic field
a small block of weight 10 Ib is placed on an inclined plane which makes an angle of 30 degree with the horizon. resolve the gravitational force.
The ratio of specific charge of a proton and an alfa-particle is: (1) 2 : 1 (2) 1 : 2 (3) 1 : 4 (4) 1 : 1 Ans:(1) 2 : 1
Relative velocity of a boat in a river flowing at a given velocity horizontally Ans) assume the river to be stopped and measure relative velocity of boat and find angle.
(a) Two55 g ice cubes are dropped into300 g of water in a thermally insulated container. If the water was initially at 25°C, and the ice came directly from a freezer at -15°C, what
a column of water contains fine metal particles of radius 2*E(-8) m, which are in thermal equillibrium at 298 K. if there are 1000 particles per unit volume at a given height,how m
What is the Directionality of LASER? Directionality: Laser emits light which is highly directional. Laser light is emitted like a relatively narrow beam in an exact direction.
Magnetic materials are divided in terms of their magnetic properties and their applications. If a material is effortlessly magnetized and demagnetized, then it is known to as a sof
what is meant by lead time of scientific development
After being launched, a rocket attains a speed of 122 m/s before the fuel in the motor is completely used. If you suppose that the acceleration of the rocket is constant at 32.2 m/
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