NCERT Class 10 Science Chapter 11 Electricity Solutions
NCERT Class 10 Science Chapter 11 Electricity Solutions Electricity NCERT TEXTBOOK Solutions for Class 10 Science 1. A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R′, then the ratio R/R′ is – (a) 1/25 (b) 1/5 (c) 5 (d) 25 Answer: (d) 25 2. Which of the following terms does not represent electrical power in a circuit? (a) I 2 R (b) IR 2 (c) VI (d) V 2 / R Answer: (b)IR2 3. An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be – (a) 100 W (b) 75 W (c) 50 W ( d) 25 W Answer: (d) 25 W 4. Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then parallel in a circuit across the same potential difference. The ratio of heat produced in series and parallel combinations would be – (a) 1:2 (b) 2:1 (c) 1:4 (d) 4:1 Answer: (c) 1:4 Q5. How is a voltmeter connected in t...