Question

Write 3 formula used to find electric power

Answer 1

Answer:

1. P = IE

where,

P =  Power in watts

I = Current in ampere

E = voltage in volts

2. P = E²/R

where,

P =  Power in watts

R = Resistance in ohms

E = voltage in volts

3. P = I²R

where,

P =  Power in watts

R = Resistance in ohms

I = Current in ampere

Answer 2

Answer:

P= VI

P= I^2R

P=(V ^ 2 )/R

Here, 'V' is potential difference ( S.I . unit is Voltage)

'I' is electric current ( S.I unit is Ampere)

'R' is resistance.( S.I unit is Ohm)

and 'P' stands for Power. ( S.I unit is Watt)

remember that 'E' stands for energy. not for electric potential.