Question

V=220v
P=5w
I=?
Can u plz find the l and send me soon

Answer 1

Given:

• Potential difference,V = 220 v

• Power,P = 5 w

To be calculated:

Calculate the Current,I ?

Formula used:

$\boxed{ \bf{ \: Power = potential \: diff. \: \times current}}$

$\boxed{\bigstar \: P \: = V \times I}$

Solution:

P = V × I

★ Substituting the values in the above formula,we get:

⇒ 5 = 220 × I

⇒ I = 5/220

⇒ l = 1/44

⇒ I = 0.02 Ampere ( Approx )

Thus,the current is 0.02 Ampere

Knowledge Enhancer:

Electric charge: Fundamental property of subatomic particles due to which it exerts a force on another particles.

• Positive charge ( Formed by releasing electrons )

• Negative charge ( Formed by gaining electrons )

Answer 2

Given,

• Potential difference, p.d. = 220 V
• Power = 5 W

$\rule{180}2\\\rule{180}2$

To Find :-

The current (I).

$\rule{180}2\\\rule{180}2$

Solution :-

We know,

$\boxed{\sf{\bigstar\ P=V\times I}}$

Now, putting the values :-

$\sf{\implies 5=220 \times I}\\\\\sf{\implies I=\dfrac{5}{220} }\\\\\sf{\implies I=\dfrac{1}{44} }\\\\\boxed{\sf{\implies I=0.022\ A}}$

$\underline{\rule{190}2}$

Other formulas that might help :-

• P = I²R
• P = V²/R
• P = E/t
• P = W/t