Question

u UUIU c) pтив кеу A electric heater draw a current of 50 mA when connected to 220V mains. Calculate the resistance of its filament.​

Answer 1

we know that resistance R = V/I

> R = resistance  

..>V= potential  

.>I= current

 

it is given that current , I= 5A

potential difference, V = 220V

we have to find out the resistance R

so, by substituting the given values in the equation we get,  

R= V/ I

R= 220/ 5

R= 44Ω

So, when 5 A current flows through a wire of resistance 5 ohms and whose potential difference is 220 V