Question

A potential difference of 220 volts is applied across a resistance of 440 ohms in an electric iron.calculate current drawn and heat energy produced in 20 seconds

Answer 1

Hello mate,

● Answer-
I = 0.5 A
H = 2.2 kJ

● Explaination-
# Given-
V = 220 V
R = 440 ohm
t = 20 s

# Solution-
Current drawn in circuit is -
I = V / R
I = 220 / 440
I = 0.5 A

Heat energy produced is calculated by-
H = VIt
H = 220 × 0.5 × 20
H = 2200 J
H = 2.2 kJ

Hope this is useful...

Answer 2

Answer:

Explanation:

Given-

V = 220 Volt

R = 440 ohm

t = 20 s

Solution:-

Current drawn in circuit is -

I = V / R

I = 220 / 440

I = 0.5 A

Heat energy produced is calculated by-

H = 220 × 0.5 × 20

H = 2200 J

Therefore Heat = 2.20 kJ

Hope this is useful.