Home
Class 12
PHYSICS
Statement-1: Electric energy is defined ...

Statement-1: Electric energy is defined as the energy consumed in transferring current from one point to another.
Statement-2: The value of the mass of every electron is `9.1 xx 10^(-31)`kg.

A

Only Statement 1 is correct

B

Only Statement 2 is correct

C

Both the statement are correct

D

None of the statements is correct

Text Solution

Verified by Experts

The correct Answer is:
C
Electric energy is defined as the energy consumed in transferring current from one point to another.
The value of the mass of every electron is `9.1 xx 10^(-31)kg`.
Promotional Banner

Similar Questions

Explore conceptually related problems

The force between two electrons when placed in air is equal to 0.5 times the weight of an electron. Find the distance between two electrons (mass of electron = 9.1 xx 10^(-31)kg )

The mass of half mole of electrons is about (Given: Mass of electron =9.1 xx10^(-28) g)

In a TV pictgure tubeelectrons re ejected from the cathode with negligible speed and reach a velocity of 5x10^6 m/s in travelling one centimeter. Assuming straight line motion, find the constant force exerted on the electron. The mass of the electron is 9.1xx10^-31 kg.

A photon of wavelength 400nm strikes a metal surface. The electrons are ejected with a velocity 5.85 xx 10^(5)ms^(-1) . Calculate the minimum energy required to remove an electron from the metal surface. The mass of an electron is 9.109 xx 10^(-31)kg .

An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV, and the second with 100 keV. Which is faster, the electron or the proton ? Obtain the ratio of their speeds. (Electron mass =9.11xx10^(-31) kg , proton mass =1.67xx10^(-27) kg, 1 eV=1.60xx10^(-19) J) .

An electron is projected with an initial speed v_(0)=1.60xx10^(6)ms^(-1) into the uniform field between the parallel plates as shown in fig. Assume that the field between the plates is uniform and directed vertically downward, and that the field outside the plates is zero. the electrons enters the field at a point midway between the plates. Mass of electron is 9.1xx10^(-31)kg . The vertical displacement traveled by the proton as it exits the region between the plated is (mass pf proton is 1.67xx10^(-27)kg ).

An electron is projected with an initial speed v_(0)=1.60xx10^(6)ms^(-1) into the uniform field between the parallel plates as shown in fig. Assume that the field between the plates is uniform and directed vertically downward, and that the field outside the plates is zero. the electrons enters the field at a point midway between the plates. Mass of electron is 9.1xx10^(-31)kg . The vertical displacement traveled by the proton as it exits the region between the plated is (mass pf proton is 1.67xx10^(-27)kg ).

At what speed should the electron revolve around the nucleus of a hydrogen atom in order that it may not be pulled into the nucleus by electrostatic attraction ? Take the radius of orbit of an electron as 0.5Å , the mass of the electron as 9.1xx10^(-31) kg and charge as 1.6xx10^(-19)C .

If an electron has an energy such that its de Broglie wavelength is 5500 Å , then the energy value of that electron is (h= 6.6 xx 10^(-34)) Js, m_( c) = 9.1 xx 10^(-31) kg

Determine the de Broglie wavelength of a proton, whose kinetice energy is equal to the rest of the mass energy of an electron. Given that the mass of an electron is 9xx10^(-31) kg and the mass of a proton is 1837 times as that of the electron.