Question

a 40W lamp requires 0.182A of current at 220V, while 60W lamp requires a current of 0.272A current at 220V. if a 40W lamp and a 60W lamp are connectedin series with 220V, line, how many amperes of crrent will flow through each lamp

Answer 1

hey sakshi here

ur answer is in attachment

Answer 2

0.109 A current will flow through each lamp.

Explanation:

As the both the lamps connected in series, so first we have to calculate the equivalent resistance.

Resistance for first lamp, use ohm`s law.

$R=\frac{V}{I}$

here, V is the voltage and I is the current.

Given V = 220 V, I = 0.182 A.

substitute the values, we get

$R=\frac{220}{0.182}$

$R=1208.79 \ohm$ ohm

For second lamp resistance,

$r=\frac{220}{0.272}$

r = 808.82 ohm

Equivalent resistance for series combination,

$R_e=R+r$

$R_e=1208.79+808.82$

$R_e=2017.61$ ohm.

Now as both the lamps 40 W and 60 W are connected in series with 220V,

so current,

$i=\frac{220}{2017.61}$

i = 0.109 A

Thus, 0.109 A current will flow through each lamp.

#Learn More: Ohm law.

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