Question

find the current passing through an heater which has the resistance of 20ohm and a potential difference of 220V is applied to it​

Answer 1

Answer:

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Answer 2

Answer:

➡When Series  

R = R1 + R2

R = 20 + 20

R = 40 ohm

V = R × I ( Ohm's law )

I = V / R

I = 220 / 40 =  5.5 amp

➡When parallel  

1 / R = 1 / 20 + 1 / 20

1 / R = 2 / 20

1 / R = 1 / 10

R = 10 ohm

I = V / R

I = 220 / 10

I = 22 Amp