Question

How much current an electric heater draw from 440 volt line if its resistance is 100 Ohm.​

Answer 1

Explanation:

(a) Given:

For electric bulb:

Voltage = 220 V

Resistance = 1200 Ω

Solution:

According to Ohm's law, the current is ratio of voltage and resistance, hence, can be written as:

Plug the given values in the above formula:

(b) Given:

For electric heater coil:

Voltage = 220 V

Resistance = 100 Ω

Solution:

According to Ohm's law, the current is ratio of voltage and resistance hence can be written as:

Plug the given values in the formula:

Answer 2

Answer:

I=4.4A

Explanation:

I=V/R

given:V=440 volt , R=100 Ohm

I=V/R

=440/100

=44/10

I=4.4A