simple electric circuit and ohms law

Question 1

what is the simple electric circuit consists of

Answer 1

1. electric source
2. conductor
3. key switch
4. ammeter
5. voltmeter
6. fixed resistance
7. variable resistance Rheostat

Question 2

use of electric sourse

Answer 2

source of electromotive force to male electric potential defference between the terminal of conductor

Question 3

use of wire

Answer 3

to conduct electrical charges through the closed circuit

Question 4

use of key switch

Answer 4

to switch on or off the circuit

Question 5

use of ammeter

Answer 5

instrument connected in series to measure the elerctric current intensity through the circuit

Question 6

the ammeter of high efficiency should have

Answer 6

low resistance

Question 7

use of voltmeter

Answer 7

instrument connected in parallel between two points to measure the electric potential differennce between this point

Question 8

use of fixed resistance

Answer 8

it is consumes the electric energy in form of thermal energy

Question 9

use of Rheostat

Answer 9

to adjusit resissnce of the whole circuit to allow suitaple current to transfer

Question 10

diff electric current intensity

Rule and unit

Answer 10

it is the quantity of electric charges passes a given cross section in one second

I=RxV

AMPERE

Question 11

diff potential difference

rule and unit

Answer 11

it is the work done to transfer a unit of charge between these two points

V=IxR

Question 12

diff ohms law

Answer 12

it is the current intensity in a conductor is directly proportional to the potential difference across its terminals at constant temperature

Question 13

diff couloum

Answer 13

it is the quantity of electric charges when the electric chrges pasess in one sec

Question 14

what meant by electric current intinsty = 5A

Answer 14

it is the quantity of electric charges pases in one sec through a closed circuit

Question 15

what meant by the potential deffrence = 3 volt

Answer 15

the work done 3 joule to transfer a unit of charge 1 C between two terminal of conductor

Question 16

what meant by e m f = 1.5 v

Answer 16

the work done 1.5 joule to transfer a unit of charge 1 C through the whole circuit ( inside and outside the circuit)

Question 17

what meant by the work done to transfer an electric charge of 4 coulombs between two points in an electric circuit = 20 joule

Answer 17

the potential deffreance between two point is 5 volt

Question 18

ohmic resistance of a conductor = 10 ohm

Answer 18

it means that this conductor allow passing current intensity 1 amp if the potential deffrence betweent two terminals is 10 volt

Question 19

diff electro motive force

Answer 19

it is the total work done to transfer a unit of charge through whole circuit inside and out side the cell or it is potential difference betweent two poles of the cell at open circuit

Question 20

diff ampere

Answer 20

it is the current intensity when electric charge of 1 coulomb passes in 1 sec

Question 21

diff volt

Answer 21

it is potential difference between two points if the work of 1 joule is done to transfer a unit of charge 1 C between these two point

Question 22

diff ohm

Answer 22

it is the resistance of conductor allows passing current intensity 1 amp if the potential difference betwwen two terminals is 1 volt

Question 23

the voltmeter of high efficiency should have

Answer 23

high resistance

Question 24

the ohmeter of high efficiency should be

Answer 24

low resistance

Question 25

if i tell you resistance doubled what is happen to current

but if i tell you current doubled what is happen to current

resistance

and tell me why in each case

Answer 25

halved , because the current inversly properthonal with ohmic resistance

nothging , because ohmic resistance depend on

length , area , kind of matrial and tempreture only