Q1. With the help of a diagram of experimental set up describe an activity to show that the force acting on a current carrying conductor placed in a magnetic field increases with increase in field strength.
Q2.Differentiate between energy obtained by burning fossil fuels and that obtained as solar energy.
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Consider the diagram shown below:
To perform the activity you need to follow the following steps:
Get a battery, two magnets of different sizes and magnetic intensities, an aluminium rod, connecting wires, stand,
Now arrange the above mentioned articles as shown above.
When the arrangement has been made keep the rod still in air and switch on the current.
Observation: Nothing happens.
Now bring the magnet with lower magnetic intensity closer to the aluminium rod.
Observation: The rod deflects. Closely observe the velocity of the rod.
Inference: A current carrying conductor in magnetic field experiences force.
Now steady the rod and bring the both the magnets closer together (to ensure that the magnetic field is greater than in the previous case).
Observation: The rod moves towards the magnet only this time it is faster as it was earlier.
Inference : The above is possible only and only if the force acting on the rod is more than in the previous case. Because since the body will be starting with zero velocity it will move faster only if its acceleration is more and since acceleration more the force acting on it is more. Thus, force acting on a current carrying conductor placed in a magnetic field increases with the increase in the field strength.
Solar Energy:
1) It is a renewable source of energy
2) It is available only during day time
3) Special devices like solar cooker are required to harness solar energy
4) Sun's energy is available in a diffused form
5) It causes no air pollution
Energy from Fossil Fuels:
1) It is a non renewable source of energy
2) It is available all the time
3) It requires no special devices
4) They provide energy in a concentrated form
5) It causes air pollution
To perform the activity you need to follow the following steps:
Get a battery, two magnets of different sizes and magnetic intensities, an aluminium rod, connecting wires, stand,
Now arrange the above mentioned articles as shown above.
When the arrangement has been made keep the rod still in air and switch on the current.
Observation: Nothing happens.
Now bring the magnet with lower magnetic intensity closer to the aluminium rod.
Observation: The rod deflects. Closely observe the velocity of the rod.
Inference: A current carrying conductor in magnetic field experiences force.
Now steady the rod and bring the both the magnets closer together (to ensure that the magnetic field is greater than in the previous case).
Observation: The rod moves towards the magnet only this time it is faster as it was earlier.
Inference : The above is possible only and only if the force acting on the rod is more than in the previous case. Because since the body will be starting with zero velocity it will move faster only if its acceleration is more and since acceleration more the force acting on it is more. Thus, force acting on a current carrying conductor placed in a magnetic field increases with the increase in the field strength.
Solar Energy:
1) It is a renewable source of energy
2) It is available only during day time
3) Special devices like solar cooker are required to harness solar energy
4) Sun's energy is available in a diffused form
5) It causes no air pollution
Energy from Fossil Fuels:
1) It is a non renewable source of energy
2) It is available all the time
3) It requires no special devices
4) They provide energy in a concentrated form
5) It causes air pollution
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Similar questions
1) It is a renewable source of energy
2) It is available only during day time
3) Special devices like solar cooker are required to harness solar energy
4) Sun's energy is available in a diffused form
5) It causes no air pollution
Energy from Fossil Fuels:
1) It is a non renewable source of energy
2) It is available all the time
3) It requires no special devices
4) They provide energy in a concentrated form
5) It causes air pollution