Question

The voltage through an appliance is 220V and current passing is 0.2 A. Find the power.​

Answer 1

Given

• Voltage = 220 V
• Current = 0.2 A

To find

• Power of the appliance

Knowledge required :-

• Formula to calculate power :-

⠀⠀⠀⠀⠀⠀Power = V × I

where,

• V is the voltage
• I is the current

Solution

⠀⠀⠀⇒ Power = V × I

⠀⠀⠀⇒ Power = 220 × 0.2

⠀⠀⠀⇒ Power = 220 × 2/10

⠀⠀⠀⇒ Power = 22 × 2

⠀⠀⠀⇒ Power = 44

★ Power of the appliance = 44 watt

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Know More :

• Electrical power is the rate at which electric energy is transferred by an electric circuit.
• Its S.I. unit is watt (W).
• Current is the rate at which charge flows through an electric circuit.
• Its S.I. unit is ampere (A).
• Formula to calculate current :-

⠀⠀⠀⠀Current = V/R

• Voltage is the difference in electric charge between two points in the electric circuit.
• Its S.I. unit is Volt.
• Formula to calculate voltage :-

⠀⠀⠀⠀Voltage = I × R

[Where : I is the current flowing in the electric circuit and R is the resistance.]