Question

Number of electric lines of force passing though unit area is called

Answer 1

ANSWER

• ELECTRIC FIELD.....?

WHEN A CHARGED BODY IS PLACED IN OPEN SPACE THAN THE REGION AROUND IT WHERE WE CAN EXPERIENCE THE EFFECT OF THE CHARGE IS KNOWN AS ELECTRIC FIELD

• FIELD LINES....?

THE IMAGINARY LINES THAT EMERGE OUT OR IN TO THE CHARGED BODY OR PARTICLE IS KNOWN AS FIELD LINE

FIELD LINE IS INWARD FOR POSITIVE OR OUT WARD FOR NEGATIVE PARTICLE

• STRENGTH OF ELECTRIC FIELD...?

IF WE WANT TO CALCULATE THE STRENGTH OR COMPARE THE STRENGTH OF ELECTRIC FIELD THAN WE PLACE TWO AREAS OF SAME MAGNITUDE ONE IS CLOSER TO THE CHARGED BODY AND OTHER IS AWAY FROM IT THAN WE NOTICE THAT THE NO. OF ELECTRIC FIELD LINES PASSING THROUGH THE NEAR BY AREA IS MORE THAN THE FAR AWAY AREA.

SO THE STRENGTH OF ELECTRIC FIELD IS STRONGER AT NEAR THE CHARGED BODY THAN THE FAR AWAY POINT.

SO IN SUCH CASE THE PRODUCT OF THE AREA VECTOR AND THE ELECTRIC FIELD PASSING THROUGH IT IS KNOWN AS ELECTRIC FLUX

WE CAN CHOSE THE DIRECTION OF THE AREA VECTOR ACC. TO OUR CONVINENCE AND STUCK TO IT.....

THE DIRECTION OF ELECTRIC FIELD AND NEED TO BE SAME SO IN SOME CASES WE CAN TAKE THE COMPONENT OF THE ELECTRIC FIELD OR AREA