Question

A potential difference of 220V is applied across a resistance of 440 ohm
in an electrical appliance. Calculate the current drawn and the heat
energy produced in 20 seconds.

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Answer 1

$\huge\mathfrak\red{BONJOUR\:MATE }$

V= 220 V

R= 440 ohm

I=V/R=220/440=0.5 A

Heat energy = I2RT = = 2200 KJ = 2.2J

◆ Answer-
I = 0.5 A
W = 2200 J

◆ Explanation-
# Given-
V = 220 V
R = 440 Ω
t = 20 s

# Solution-
Current flowing through circuit -
I = V / R
I = 220 / 440
I = 0.5 A

Heat energy is given by -
W = VIt
W = 220 × 0.5 × 20
W = 2200 J

Therefore, current flowing through circuit is 0.5 A and work done is 2200 J.

Hope this helps you...