Question

in electric circuit 2mA current flows through it with a 220 volt potential difference find the value of resistance​

Answer 1

Solution :

Given :-

Current flow in circuit = 2mA

P.d. across the circuit = 220V

To Find :-

Resistance of the circuit

Concept :-

This question is completely based on concept of ohm's law.

As per ohm's law, Current flow in the circuit is directly proportional to the applied p.d. (for constant Temperature)

Mathematically,

$\boxed{\bf{\pink{\large{V\propto I}}}}$

• V denotes applied p.d.
• I denotes current flow

Calculation :-

$\implies\sf\:V=I\times R\\ \\ \implies\sf\:220=(2\times 10^{-3})\times R\\ \\ \implies\sf\:R=\dfrac{220}{2\times 10^{-3}}\\ \\ \implies\boxed{\bf{\orange{R=110\:k\Omega}}}$