Class 10 Electricity Ncert Solutions File

(a) I²R (b) IR² (c) VI (d) V²/R Answer: (b) IR²

Here are the (based on the latest NCERT textbook). class 10 electricity ncert solutions

(a) 100 W (b) 75 W (c) 50 W (d) 25 W Answer: Resistance ( R = V^2 / P = 220^2 / 100 = 484 , \Omega ) At 110 V: ( P = V^2 / R = 110^2 / 484 = 25 , \text{W} ) → (d) (a) I²R (b) IR² (c) VI (d) V²/R

Answer: Alloys have higher resistivity and do not oxidize easily at high temperatures. What determines the rate at which energy is

Answer: ( H = I^2 R t = 5^2 \times 20 \times 30 = 25 \times 20 \times 30 = 15000 , \text{J} ) In-Text Questions (Page 220) Q1. What determines the rate at which energy is delivered by a current? Answer: Electric power ( P = V \times I = I^2 R = V^2 / R )

Answer: In parallel across the two points.