Question

A heater coil has a resistance of 100 ohm and connected to 220 volt supply calculate the heat produced by the heater in 1 hour

Answer 1

Answer:

1742400 J

Explanation:

According to the given question,

R = Resistance = 100 ohm

V = Volt = 220 V

t = time = 1 h = 3600 sec

H = Heat

And we are asked to find the heat produced by the heater.

We know,

• H = (V^2/R )×t

Putting the values we get,

• H = (220×220/100)×3600

• H = 1742400 J

Thus heat Produced is 1742400 J by the heater coil.

Answer 2

Solution :-

Given that :-

Resistance = 100 Ω

Potential Difference = 220 V

Time = 1 hrs = 60 min = 3600 sec

Now we have

Heat = Power × t

Power = V² ÷ R

So Heat produced in one sec

= (220)² ÷ 100 × 1

= 48400 ÷ 100 × 1

= 484 Joules

Now heat produced in 3600 sec

= 484 × 3600

= 1742400 Joules