Question

A heating coil of resistance 10ῼ takes a current of 2 Ampere. The heat developed by it in 5 seconds is A. 1000 Joules B. 200 Joules C. 100 Joules D. 2200 Joules​

Answer 1

Answer:

B. 200J

Explanation:

Given ⤵

➡Resistance (R) = 10ῼ

➡Current (I) =2Ampere

➡Time (t) = 5s

To find ⤵

➡Heat produced (H)

Using formula⤵

➡H=I²Rt

➡H=(2)²×10×5J

➡H=4×50J

➡200J.

➡A heating coil of resistance 10ῼ takes a current of 2 Ampere. The heat developed by it in 5 seconds is 200 Joules.

Hence Option B. 200J is correct answer.

Extra formula related to heat ⤵

⚫H= I²Rt

⚫H= V²t/R

⚫H= VIt

Hope this is helpful to you!