Hi Abhishek,

First let us note down the given values :

Resistance of electric lamp (R1) = 100

Resistance of toaster (R2) = 50
Resistance of water filter (R3) = 500

A potential difference of the source (V) = 220 V

Now let's start with our solution :

1.Finding out the Total resistance (R) :

1/R = 1/R + 1/R + 1/R

1/R = 1/100  + 1/50 + 1/500

1/R = ( 5 + 10 + 1 )/500

1/R = 16/500

500/16 = R

Total Resistance (R) = 500/16

R = 31.25

2.Finding the flow of electric current :

According to Ohm's Law,we know that V I or V = IR

Hence,R = V/I

500/16 = 220/I

I = 220 (16/500)

I = 7.04 A

Ans : The resistance of the electric iron is 31.25 and the current flowing through it is 7.04 A.

Hope it helps
Thank you !!