Question

If 0.4 A current flows through a bulb which works at 230 V. what is its power??


plese hlp me​

Answer 1

Answer:

i=0.4 A

v=230V

P=?

by using electric potential power equation , we get

P=i x V

P=0.4 x 230

P=92 watt

it's power is 92 watt

I hope it will help you

Answer 2

GiveN :

• Current flowing (I) = 0.4 A
• Potential Difference (V) = 230 V

To FinD :

• Power of the bulb

SolutioN :

We are given that Current flowing in bulb (I) is 0.4 Ampere, Potential difference of bulb is 230 Volt.

Use formula for Power :

⇒P = VI

⇒P = 230 * 0.4

⇒P = 23 * 4

⇒P = 92

∴ Power of bulb is 92 Watts.

__________________________

Some Important Formulae :

• P = VI
• V = IR
• I = Q/t
• H = I²Rt
• V = W/Q

Where,

• P is power
• V is potential difference
• H is heat energy
• W is work done
• Q is charge
• R is resistance
• t is time interval