Question

find the potential difference across an electric bulb whose resistance is 500 ohm and the current flowing through it is 0.5ampere​

Answer 1

Given:-

Resistance (R) = 500 ohm

Current (I) = 0.5 A

To find :-

The potential difference (v)

By Formula !

$\boxed{\sf{ V= I\times R}}$

Where ,

V= Potential difference

I= Current

R= Resistance

then by putting values in the formula

$\longrightarrow\sf V=IR\\ \\ \longrightarrow\sf V= 500\times 0.5\\ \\ \longrightarrow\sf V= 250\ V$

$\underline{\bigstar{\textsf{ Potential\ Difference (V) ={\textbf{ 250 \ Volts}}}}}$

Answer 2

Potential difference across bulb = 250 Volts.

Solution

We have resistance across bulb(R) = 500Ω

Current flowing(I) = 0.5A

Ohm's law :

It states that potential difference across a electric circuit is the product of resistance and current flowing.

● V = I × R

____________________

It also states that current flowing through it is inversely proportional to resistance.

● I ∝ 1/R

____________________

Now here we will use Ohm's law :

● I = V/R

⇒ 0.5 = V/500

⇒ V = 500 × 0.5

⇒ V = 250 Volt

∴ Potential difference across that bulb = 250 Volt.