How many electrons pass through a bulb in 1 min, if the current is 400 mA. `(e=1.6xx10^(-19)C)`?

160W-60V lamp is connected at 60 V DC supply. The number of electrons passing through the lamp in 1 min is (The charge of electron, e=1.6xx10^(-19)C )

How many electrons per second pass through a section of wire carrying a current of 0.7A ?

A conductor carries a current of 0.2 A. (a) Find the amount of charge that will pass through the cross section of conductor in 30 s . (b) How many electrons will flow in this time interval if charge on one electron is 1.6xx 10^(-19)C ?

A conductor carries a current of 0.2 A . Find the amount of charge that will pass through the cross-section of the conductor in 30 s . How many electrons will flow in this time interval if the charge on one electron is 1.6 xx 10^-19 C ?

In CE NPN transistor 10^(10 electrons enter the emitter in 10^(-6) s when it is connected to battery. About 5% electrons recombine with holes in the base. The current gain of the transistor is ……. . (e=1.6xx10^(-19)C)

There are 8.4xx10^(22) free electrons per cm^(3) in copper. The current in the wire is 0.21A (e= 1.6xx10^(-19)C ). Then the drifts velocity of electrns in a copper wire of 1mm^(2) cross section, will be:-

In a chamber, a uniform magnetic field of 6*5G(1G=10^-4T) is maintained. An electron is shot into the field with a speed of 4*8xx10^6ms^-1 normal to the field. (i) Explain why the path of the electron is a circle. Determine the radius of the circular orbit. (e=1*6xx10^(-19)C, m_e=9*1xx10^(-31)kg) .

An electron revolves in a circule at the rate of 10^(19) rounds per second. The rquivlent current is (e=1.6xx10^(-19)C)

In a conductor, 6.25 xx 10^(16) electrons flow from its end A to B in 2 s. Find the current flowing through the conductor. (e = 1.6 xx 10^(-19) C)

A beam of light of wavelength 400nm and power 1.55 mW is directed at the cathode of a photoelectric cell. If only 10% of the incident photons effectively produce photoelectrons, then find current due to these electrons. (given hc=1240 eV-nm, e=1.6xx10^(-19)C )