If `10^(6)` electrons pass from a point towards another point B in a conductor in one microsecond. Find the magnitude and direction of current. Give charge of an electron is `1.6 xx 10^(-19)` C.
Text Solution
Verified by Experts
Here, `n=10^(6) , t=10^(-6)s`, `e =1.6 xx 10^(-19)C` Now, current `I= ("ne")/(t) = (10^(6) xx (1.6xx10^(-19)))/10^(-6)` `=1.6 xx 10^(-7)A` The direction of current is from B to A
Topper's Solved these Questions
CURRENT ELECTRICITY
PRADEEP|Exercise Conceptual Problems|3 Videos
CURRENT ELECTRICITY
PRADEEP|Exercise Very short Q/A|7 Videos
COMMUNICATION SYSTEMS
PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos
DUAL NATURE OF RADIATION AND MATTER
PRADEEP|Exercise Exercise|191 Videos
Similar Questions
Explore conceptually related problems
One billion electrons pass from a point P towards another point Q in 10^(-3) s. What is the current in ampere ? What is its direction ?
In a conductor, 10^(16) electrons move from a point A towards point B in 1 milli second. 10^(14) positive ions move from a point B towards point A in 1 milli second. What is the current in ampere and its direction? Charge on electron = charge on position ion = 1.6 xx 10^(-19)C .
Give the order of the following : Charge on electron ( 1.60xx10^(-19)C )
Ten million electrons pass from point P to point Q m one micro second. The current and its direction is
How many electrons pass through a lamp in 2 minutes, if the current is 300 mA. Given that charge on an electron is 1.6 xx 10^(-19)C .
Calculate the total charge of a mole of electrons if the electrical charge on a single electron is 1.60 xx 10^(-19) C.
What is the current flowing through a conductor if 1 million electrons are crossing in 1 millisecond through a cross section of it from A to B ? Charge on an electron =1 .6 xx 10^(-19) C .
An electron is moving northwards with a velocity 3*0xx10^7ms^-1 in a uniform magnetic field of 10T directed eastwards. Find the magnitude and direction of the magnetic force on the electron. (e=1*6xx10^(-19)C)
PRADEEP-CURRENT ELECTRICITY-Problems for Practice (B)