# MCQ Questions for ICSE Class 10 Physics Chapter 9 Electric Power and Household Circuit

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## MCQ Questions for ICSE Class 10 Physics Chapter 9 Electric Power and Household Circuit

Here we are providing MCQ Questions for ICSE Class 10 Physics Chapter 9 Electric Power and Household Circuit. This covers questions from the entire chapter. Practicing these questions will help students to get to the root of each topics. This will also help to understand the every sub-topic of chapter 9 Electric Power and Household Circuit.

Q.1. Commercial unit of electrical energy :
(a) kWh
(b) Wh
(c) W-Sec
(d) All of these

Q.2. Electrical power can be written as P=QV/t. This statement is :

(a) True
(b) False
(c) Can’t say
(d) None of these

Q.3. One horse power is equal to :
(a) 750 KW
(b) 76 KW
(c) 0.76 KW
(d) 0.75 KW

Q.4. The value of 1 Wh in joule :
(a) 360 J
(b) 36 J
(c) 3600 J
(d) 3.6 J

Q.5. Two resistance of R1 = 3 Ω, R2 = 8 Ω are connected in parallel across battery of 20 V. Electrical energy supplied in 5 min.
(a) 300 kJ
(b) 277.49 kJ
(c) 500.29 kJ
(d) 600.37 kJ

Q.6. 3A current is flowing through a voltage source in a resistor of 30 W for 5 minutes. The heat produced will be :
(a) 9 × 103 cal
(b) 1.9 × 104 cal
(c) 4 × 105 cal
(d) 19.44 cal

Q.7. In the following circuit find the electrical energy spent in R1 for 1 minute.

(a) 1440 J
(b) 2880 J
(c) 3443 J
(d) 3008 J

Q.8. A heater has a rating 5000 W, 240 V, the electrical energy consumed in 60 min (in kWh).
(a) 5000 kWh
(b) 5 kWh
(c) 60 kWh
(d) 30 kWh

Q.9. The amount of heat produce in 1 hour in a electric heater rated 500W, 300V.
(a) 50 × 105 J
(b) 36 × 105 J
(c) 18 × 105 J
(d) 300 J

(b) Rs. `2 (c)` Rs. 5