ICSE Worksheet for chapter-14 Electrical Power & Household Circuits class 10

ICSE Worksheet for chapter-14 Electrical Power & Household Circuits class 10

Worksheet For class 10

This page is prepared by the Academic team of Physics Wallah which consists of ICSE Board Worksheet for Class 10 Physics . Students of Class 10 Physics can get a free Worksheet for Class 10 Physics in PDF format prepared as per the newest syllabus and examination pattern in your schools.

Standard 10 students can practice questions and answers which are given here for Physics in Grade 10 that will help them to improve their knowledge of all important chapters and their topics. Students can also download free pdf of Class 10 Physics Notes prepared by teachers and solve important problems provided here with solutions on daily basis to get more scores in school exams and tests.

If any students need to take the online test to check their concepts or undertstanding then they can visit Physics Quiz for Class 10 .

Summary

• HEATiNG EFFECT OF CURRENT- ELECTRIC ENERGY, ELECTRIC POWER
• POWER VOLTAGE RATING OF ELECTRIC APPLIANCES
• APPLICATION OF HEATING EFFECT OF CURRENT
• EFFECT FUSE and SUPERCONDUCTORS

Section 1 - Objective

Q1. Two heater wires of equal length are first connected in series and then in parallel with a battery. The ratio of heat produced in the two cases is:

1. 2:1
2. 1:2
3. 4:1
4. 1:4

Q2. How much electrical energy in kilowatt hour is consumed in operating ten, 50 watt bulbs for 10hours per day in a month of 30 days?

1. 15
2. 150
3. 1500
4. 15000

Q3. An electric iron draws a current of 4A when connected to 220V mains. Its resistance must be:

1. 40Ω
2. 55Ω
3. 100Ω
4. None of these

Q4. The resistance of a conductor is reduced to half the initial value keeping the potential differences same as before. In doing so the heating effect in the conductor will become

1. Half
2. one fourth
3. four times
4. double

Q5. Laws of heating effect of current was given by:

1. Faraday
2. Joule
3. Ohm
4. Maxwell

Q6. An electric iron is based upon the principle of:

1. Magnetic effect of current
2. Heating effect of current
3. Chemical effect of current
4. None of these

Q7. A fuse wire is always connected to the:

1. Neutral wire
2. Earth wire
3. Live wire
4. None of these

Q8. The heating effect of a current carrying conductor is due to :

1. Loss of kinetic energy of moving atoms
2. Loss of kinetic energy of moving electrons
3. Attraction between electrons and atoms
4. Repulsion between electrons and atoms

Q9. The correct relation between heat produced (H) and electric current I flowing is:

1. H∝ I
2. H ∝ 1/I
3. H ∝ I ²
4. H ∝ 1/I ²

Q10. Fuse wire is made up of:

1. Copper
2. Aluminum
3. Alnico
4. Lead tin alloy

Q11. Two heater wires of same length and material but of different thickness are connected in series across a power supply. Then power dissipated:

1. Will be same in both
2. Will be more in thinner wire
3. Will be more in thicker wire
4. Cannot be predicted

Section 2 - Subjective

Q1. An electric kettle is rated 500W, 220V. It is used to heat 400g of water for 30 seconds. Assuming the voltage to be 220V, calculate the rise in the temperature of the water. Specific heat capacity of water = 4200 J/Kg °C

Q2. Calculate the resistance of an electric bulb which allows a 10A current when connected to a 220V power source.

Q3. Name a few practical application of heating effect of current.

Q4. Out of the following bulbs rated 40W, 220V, 60W, 220V and 100W, 220V which one will glow the brightest when connected in series to a supply of 220V??

Q5. Two lamps, one rated 100W at 220V and other 60W at 220 V are connected in parallel to a 220V supply. What is current drawn from the supply line?

Q6. 15 bulbs of 60 W each run for 6hours daily and a refrigerator of 300W run for 5 hours daily. Work out per day bill at 3 rupees per unit.

Solutions for Section 1 & 2

Objective

Subjective

1. APPROX 9 ^o c

5. 0.727A

6. Rs. 20.70