Physics Electricity CBSE Board 2026 Medium
(i) Define the SI unit of power. Express the electric power of an electric appliance in terms of potential di…
- (i)Define the SI unit of power. Express the electric power of an electric appliance in terms of potential difference and current flowing through it.
- (ii)In a house, 3 bulbs of 100 W each, are lit for 5 hours daily and an electric heater of 1.0 kW is used for half an hour daily. Calculate the total energy consumed in a month of 30 days and its cost at the rate of ₹ 3.60 per kWh.
- (iii)Convert the commercial unit of electric energy into Joule (J).
🔒 Step-by-step solution
Sign up free to reveal the full worked solution — hints, steps and the final answer, with a Solve-with-us walkthrough.
More questions from Electricity
Class 10 Physics — every question with an expert-verified, step-by-step solution.
- Q1 A piece of wire of resistance R is cut into five equal parts. These…
- Q1 What does an electric circuit mean?
- Q2 Which of the following terms does not represent electrical power …
- Q2 Define the unit of current.
- Q3 An electric bulb is rated 220 V and 100 W. When it is operated on…
- Q3 Calculate the number of electrons constituting one coulomb of c…
- Q4 Two conducting wires of the same material and of equal lengths and…
- Q5 How is a voltmeter connected in the circuit to measure the pote…
- Q6 A copper wire has diameter 0.5 mm and resistivity of 1.6 × 10⁻⁸ Ω m…
- Q7 The values of current I flowing in a given resistor for the corresp…
- Q8 When a 12 V battery is connected across an unknown resistor, there i…
- Q9 A battery of 9 V is connected in series with resistors of 0.2 Ω,…