Question

Give me all the formula for chapter ELECTRICITY [class 7th ICSE syllabus] with their relations!

Answer 1

electric charge SI unit is coulomb denoted by C.
one coulomb is that quantity of electric charge which exerts a force of 9 x 10^ N on an equal charge places at distance of 1m from it.
electric current:
I=Q/T
S. I unit is ampere.
1 ampere= 1 coulomb / 1 Second.
potential difference :
P.D = work done/ quantity of charge moved
V= W/ Q
1 Volt= 1 joule/ 1 coulomb.
Ohm' S law:
V = IR
Resistance R= V/ I
Resistance in series:
R= R1 + R2
Resistance in parallel:
1/ R = 1/ R1 + 1/ R2
POWER=WORKDONE/ TIME TAKEN
P= W/T
Electric power= potential difference x current
Electric power = P = V x I
P= I^2R
P= V^2/R

Answer 2

Answer:

electric charge SI unit is coulomb denoted by C.

one coulomb is that quantity of electric charge which exerts a force of 9 x 10^ N on an equal charge places at distance of 1m from it.

electric current:

I=Q/T

S. I unit is ampere.

1 ampere= 1 coulomb / 1 Second.

potential difference :

P.D = work done/ quantity of charge moved

V= W/ Q

1 Volt= 1 joule/ 1 coulomb.

Ohm' S law:

V = IR

Resistance R= V/ I

Resistance in series:

R= R1 + R2

Resistance in parallel:

1/ R = 1/ R1 + 1/ R2

POWER=WORKDONE/ TIME TAKEN

P= W/T

Electric power= potential difference x current

Electric power = P = V x I

P= I^2R

P= V^2/R

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