Question

A heating device is connected to 230V supply. If the current is 2A, calculate the heat produced in 5 minute, find the power of the heating device?​

Answer 1

Answer:

➺ Heat produced (H) = I²Rt

➺ Heat produced (H) = I²RtSo, heat produced in 5 minutes = 138000 J or 138 kJ.

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Answer 2

Answer:

138,000 joules

Explanation:

Given:

Voltage = 230 volts

Current = 2 Amperes

Time = 5 minutes

1 minute = 60 seconds

5 minutes = 5×60 = 300 seconds

To find:

Heat produced

We can say that:

heat = I²RT (or) VIT

Solving with I²RT:

R=V/I

R=230/2

R = 115 \ ohms

Substituting the values,

2²×115×300

= 138,000 joules

Using VIT :

=230×2×300

=138,000 Joules

The heat produced is equal to 1,38,000 joules