Conduction of Electricity

Question 1

UNIT FOR CHARGE

Answer 1

COULOMB (C)

Question 2

CHARGE ON AN ELECTRON

Answer 2

-1.6*10^-19 C

Question 3

DEFINITION FOR ELECTRIC CURRENT

Answer 3

RATE OF FLOW OF ELECTRIC CHARGE

Question 3

SYMBOL FOR ELECTRIC CURRENT

Answer 3

I

Question 3

UNIT FOR ELECRTIC CURRENT

Answer 3

(Amps) A

Question 3

DIRECTION OF ELECTRIC CURRENT

Answer 3

POSITIVE TO NEGATIVE

Question 3

DIRECTION OF ELECTRONS FLOW

Answer 3

NEGATIVE TO POSITIVE

Question 3

DESCRIBE THE BONDING IN METALS

Answer 3

METAL LATTICE WITH FREE ELECTRONS

Question 4

WHAT EFFECT DOES INCREASING AND RESISTANCE HAVE ON DRIFT VELOCITY

Answer 4

DRIFT VELOCITY DECREASES

Question 4

EQUATION LINKING CURRENT TO DRIFT VELOCITY

Answer 4

I=nAve

Question 5

WHAT EFFECT DOES DOUBLING THE DRIFT VELOCITY HAVE ON THE CURRENT

Answer 5

CURRENT ALSO DOUBLES

Question 6

WHAT CAN BE SAID FOR THE VALUE ‘n’ & ‘e’ FOR A SPECIFIC MATERIAL

Answer 6

THEY ARE CONSTANT AND DO NOT CHANGE FOR A SPECIFIC MATERIAL

Question 6

IF THE RADIUS OF THE WIRE DOUBLES WHAT EFFECT DOES THIS HAVE ON THE CURRENT

Answer 6

V DECREASES BY THE FACTOR OF 4

Question 7

EFFICIENCY EQUATION

Answer 7

(USEFUL OUTPUT/TOTAL INPUT) *100

Question 8

ONE AMPS IS SAME AS?

Answer 8

1 CS^-1

Question 9

HOW TO FIND THE RATE OF CHARGE TRANSFER FROM A CURRENT TIME GRAPH

Answer 9

AREA UNDER THE GRAPH

Question 10

WHAT HAPPENS WHEN THERE IS NO PD ACROSS THE METAL

Answer 10

THE DIRECTION OF THE MOTION OF THE ELECTRON IS RANDOM, ZERO NET VELOCITY, FREE ELECTRONS MOVE FAST AROUND 10^6 MS^-1

Question 11

WHAT HAPPENS WHEN THERE IS PD ACROSS THE METAL

Answer 11

THE DIRECTION OF THE MOTION OF THE ELECTRON IS TOWARDS THE POSITIVE SIDE, IS ACCELERATED , DRIFT VELOCITY IS SMALL AROUNF 10^-3 OT 10^-4 MS^-1