Question

How to find coloumb,resistance, power, potential difference formula

Answer 1

coulomb formula

F=k q1 q2/r²
where
q1 is magnitude of first charge
q2 is magnitude of second charge
k is Coulomb's constant ( 9 × 10-9 N m2/C)

r is distance between two charges
unit is N

resistance formula
I
if the circuit is in series add all the resistance to find the total resistance
if you don't know the individual resistance you can use ohm's law
V=IR
where
R=V/I
where V is voltage and I is current and rR is resistance
for parallel resistance
let the total resistance be 1/Rp
1/Rp=1/R1+1/R2...
by this you can find resistance in parallel

power formula
power=work done/time taken
unit:watt (w)

potential difference formula

you can find potential difference by using ohm's law
v is potential difference
V=IR

hope it is useful