Question

a bulb of resistance 400 ohms is connected to 220 v mains calculate the magnitude of current

Answer 1

Answer:

A bulb of resistance 400Ω is connected to 220V mains. Calculate the magnitude of current. I=V/R=220V/400Ω=0.55A

Answer 2

Answer :-

• Magnitude of current is 0.55 A.

Explanation :-

Given :

• Resistance (R) = 400 Ω
• Potential difference (V) = 220 V

To find :

• Electric current (I)

Solution :

Using Ohm's law :

• V = IR

Substituting the values,

⇒ 220 = I × 400

⇒ I = 220/400

⇒ I = 0.55 A

• Magnitude of current is 0.55 A.