Physics
Lenz's law is based on the law of conservation of:
- force
- charge
- mass
- energy
Answer
energy
Reason — Lenz's law is based on the law of conservation of energy. It shows that the mechanical energy is spent in doing work against the opposing force experienced by the moving magnet, and it is transformed into the electrical energy due to which current flows in the solenoid.
Related Questions
The amount of heat energy required to melt a given mass of a substance at its melting point without rise in its temperature is called:
- specific heat capacity
- specific latent heat of fusion
- latent heat of fusion
- specific latent heat of freezing
According to the old convention the color of the earth wire is:
- black
- green
- yellow
- red
Heat capacity of a body is:
- the energy needed to melt the body without the change in its temperature.
- the energy needed to raise the temperature of the body by 1°C
- the increase in the volume of the body when its temperature increases by 1°C
- the total amount of internal energy that is constant.
The graph of voltage vs current for four different materials is shown below.
Which of these four materials would be used for making the coil of a toaster?
- Q
- S
- P
- R