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प्रश्न
State whether a solar cell produces a.c. or d.c.
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उत्तर
Solar cell produces d.c. (direct current).
संबंधित प्रश्न
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
How is wind energy used to produce electricity?
A hydroelectric power station takes its water from a lake whose water level is 50 m above the turbine. Assuming an overall efficiency of 40%, calculate the mass of water which must flow through the turbine each second to produce power output of 1 MW. (Take g = 10 m s−2).
Write five forms of energy.
Give three examples of bodies possessing kinetic energy.
Give three examples of bodies possessing potential energy.
Two bodies, A and B of equal mass are kept at heights 20 m and 30 m respectively. Calculate the ratio of their potential energies.
For the same kinetic energy of a body, what should be the change in its velocity if its mass is increased nine times?
Use your brain power!
How do we save fuel by using public transport?
Name the type of energy (kinetic energy K or potential energy U) possessed in the following case:
A moving bus
