Question

how much current will an electric bulb draw from220v source if the resistance of a bulb is 1200ohm?

Answer 1

Step-by-step explanation:

we know that,

V = I x R.

{ Where V= potential difference, I = current and. R=Resistance}

Here we have, V=220 and R=1200

therefore,

I = 220÷1200

= 0.183 (approx)

Answer 2

Answer:

Current drawn by the bulb = 0.183 Amperes.

Curent drawn by the heater = 2.20 Amperes.

Step-by-step explanation:

According to Ohm's law, the current I flowing through an electrical element is directly proportional to the potential difference V applied across it.

R is called resistance of the element.

For the electric bulb:

V = 220 V.

R = 1200

Using Ohm's law,

For the heater:

R = 100

V = 220 V.

Using Ohm's law,