Power of the electric motor is given by P = VI Where, V = 220 V and I = 5 A So, Power P = 220 × 5 = 1100 W Now, the energy consumed = Power × time Where, P = 1100 W t = 2 hours = 2 × 60 × 60 seconds = 7200 seconds So, the energy consumed E = 1100 × 7200 J = 7920000 J For more answers visit to websitRead more
Power of the electric motor is given by
P = VI
Where, V = 220 V and I = 5 A
So, Power P = 220 × 5 = 1100 W
Now, the energy consumed = Power × time
Where, P = 1100 W
t = 2 hours = 2 × 60 × 60 seconds = 7200 seconds
So, the energy consumed E = 1100 × 7200 J = 7920000 J
In parallel there is no division of voltage among the appliances. The potential difference across each appliance is equal to the supplied voltage and the total effective resistance of the circuit can be reduced by connecting electrical appliances in parallel. For more answers visit to website: httpsRead more
In parallel there is no division of voltage among the appliances. The potential difference across each appliance is equal to the supplied voltage and the total effective resistance of the circuit can be reduced by connecting electrical appliances in parallel.
The resistivity of an alloy is higher than the pure metal and it does not corrode easily. Moreover, even at high temperatures, the alloys do not melt readily. Hence, the coils of heating appliances such as electric toasters and electric irons are made of an alloy rather than a pure metal. For more aRead more
The resistivity of an alloy is higher than the pure metal and it does not corrode easily. Moreover, even at high temperatures, the alloys do not melt readily. Hence, the coils of heating appliances such as electric toasters and electric irons are made of an alloy rather than a pure metal.
According to the Ohm’s law V = IR If the resistance remains constant, V is directly proportional to I. Therefore, 𝑉∝𝐼 Now, if potential difference is reduced to half of its value, the current also become half of its original value. For more answers visit to website: https://www.tiwariacademy.com/nceRead more
According to the Ohm’s law V = IR
If the resistance remains constant, V is directly proportional to I. Therefore, 𝑉∝𝐼
Now, if potential difference is reduced to half of its value, the current also become half of its original value.
The resistance of a conductor depends upon the following factors: • Length of the conductor • Cross-sectional area of the conductor • Material of the conductor • Temperature of the conductor. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12Read more
The resistance of a conductor depends upon the following factors:
• Length of the conductor
• Cross-sectional area of the conductor
• Material of the conductor
• Temperature of the conductor.
An electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h.
Power of the electric motor is given by P = VI Where, V = 220 V and I = 5 A So, Power P = 220 × 5 = 1100 W Now, the energy consumed = Power × time Where, P = 1100 W t = 2 hours = 2 × 60 × 60 seconds = 7200 seconds So, the energy consumed E = 1100 × 7200 J = 7920000 J For more answers visit to websitRead more
Power of the electric motor is given by
P = VI
Where, V = 220 V and I = 5 A
So, Power P = 220 × 5 = 1100 W
Now, the energy consumed = Power × time
Where, P = 1100 W
t = 2 hours = 2 × 60 × 60 seconds = 7200 seconds
So, the energy consumed E = 1100 × 7200 J = 7920000 J
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12/
What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series?
In parallel there is no division of voltage among the appliances. The potential difference across each appliance is equal to the supplied voltage and the total effective resistance of the circuit can be reduced by connecting electrical appliances in parallel. For more answers visit to website: httpsRead more
In parallel there is no division of voltage among the appliances. The potential difference across each appliance is equal to the supplied voltage and the total effective resistance of the circuit can be reduced by connecting electrical appliances in parallel.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12/
Why are coils of electric toasters and electric irons made of an alloy rather than a pure metal?
The resistivity of an alloy is higher than the pure metal and it does not corrode easily. Moreover, even at high temperatures, the alloys do not melt readily. Hence, the coils of heating appliances such as electric toasters and electric irons are made of an alloy rather than a pure metal. For more aRead more
The resistivity of an alloy is higher than the pure metal and it does not corrode easily. Moreover, even at high temperatures, the alloys do not melt readily. Hence, the coils of heating appliances such as electric toasters and electric irons are made of an alloy rather than a pure metal.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12/
Let the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?
According to the Ohm’s law V = IR If the resistance remains constant, V is directly proportional to I. Therefore, 𝑉∝𝐼 Now, if potential difference is reduced to half of its value, the current also become half of its original value. For more answers visit to website: https://www.tiwariacademy.com/nceRead more
According to the Ohm’s law V = IR
If the resistance remains constant, V is directly proportional to I. Therefore, 𝑉∝𝐼
Now, if potential difference is reduced to half of its value, the current also become half of its original value.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12/
On what factors does the resistance of a conductor depend?
The resistance of a conductor depends upon the following factors: • Length of the conductor • Cross-sectional area of the conductor • Material of the conductor • Temperature of the conductor. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12Read more
The resistance of a conductor depends upon the following factors:
• Length of the conductor
• Cross-sectional area of the conductor
• Material of the conductor
• Temperature of the conductor.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12/