Question

A 5 V voltage is applied for 2 hours in electric iron having resistance 100 ohms. The heat produced is​

Answer 1

Answer:

When the rate of cost of rice is Rs 24 per kg, 20 kg of rice can be purchasedfor a certain sum of money. How many kg of rice can be purchased for the

same sum if the rate is increased to Rs 30 per kg?

Answer 2

Answer:

V = 5 V

R = 100 ohm

So, I = V/R = 5/100 = 0.05 A

t = 2 hours = 2×60×60 seconds = 7200 s

H = I²Rt

= (0.05)² × 100 × 7200

= (5/100)² × 720000

= 25/10000 × 720000

= 25 × 72

= 1800 J

Please mark my answer as brainliest if it is helpful for you...