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1 OHM:
If a potential difference of 1 volt is applied across the ends of a conductor and the resulting current flowing by the conductor is 1 ampere, the resistance of the conductor is 1 ohm.
a n-p-n transistor having a.c. current gain of 50 is to be used to make an amplifier of power gain 300. what will be the voltage gain of amplifer
Capacitor construction: FIXED CAPACITORS Fixed capacitors usually consist of sheets of metal foil between which is sandwiched the dielectric, or alternatively the metal, s
Core losses or Iron losses: These losses having of hysteresis and eddy current losses, which happen due to pulsation of flux in the core. These losses depend upon the maximum flux
Insulators: Insulators are those substances which do not permit to pass electric current by them. e.g. Wood, Plastic, rubber, glass etc
In the Compton effect, a photon of wavelength l collides with a stationary electron. The wavelength of the emitted photon is: a) longer than l b) shorter than l c)
A baseball bat strikes a ball with a force of 30 newtons. If the ball was in contact with the bat for 1/10 of a second, What impulse did the ball receive? Ans - 3 Newt
A coil havingof a resistance of 100 and an inductance of 200mH. If an alternating voltage, v, givenby v=200sin500t volts is applied across the coil, measure (a) The circuit
Define in detail about the test and characteristics of good bricks. Tests for bricks 1. Absorption a brick is taken and it is weighed dry. It is then immersed in water for
Finding the centre of gravity of objects Secure a triangular file and place it on a table as a balancing point. Any sharp-edged device with a hat side might be used. Balance se
calour formed in pure and impure spectrum
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