Question

1) On an iron box marked as 690W, 230V
a) What do these markings means?
b) What is the current flowing through the coil?
c) Calculate the heat produced when it works for 5 miniutes?​

Answer 1

Answer:

1. An iron box is marked as 690 W which means that it will consume a total of 690 watts of units to work for a specific amount of time. And the 230 V means that it will only work to its fullest potential once it receives 230 Volts.

2. Power = Potential Difference*Current

= 690 = 230I

= 3 Ampere = Current

3. Time = 5 mins or, 300 seconds

= E = Power*Time

= 690*300 J

= 207900 J

I hope this helps.