Question

an electric motor takes 5A from a 220V line. determine the power of the motor and the energy consumed in 2h​

Answer 1

⭐《ANSWER》

$\huge\mathfrak{\underline {\underline\pink {ANSWER}}}$

↪Actually welcome to the concept of the ELECTRICAL POWER AND HEAT ENERGY

↪Now basically we know that , When the Electrical work is changed to the Mechanical Work , there energy produced and also there occurrs the Transformation of the Energy ,

↪Now here ,we are given with a D.C. Motor with ,

〽I = 5A , V = 220 V , T = 2h

↪POWER = V^/R or POWER = I^2 * R or POWER = V * I

↪so to calculate the power , we use ,

↪POWER = V * I

↪P = 220 * 5 ==》 Power = 1100 Watts

↪Now here,

↪By the Joules law , we get as ,

↪H ( energy ) = I ^2*R*T or H = V*I*T

↪So we get as ,

↪H = 200 * 5 * 2

↪H = 200 * 10

⭐H = 2000 kWh

Answer 2

Answer: Given rhat electric current (i)=5A

potential difference (v)=220v

Time (t)=2h=2×60×60s=7200s

Now, power (p) is given by the expression

P=VI

= 200×5watts

= 1100 watts

Now energy consumed by the motor

= H=PT

= 1100×7200J

= 7.92×10^6 J

i hope it will be helpfull for you my dear