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Physics P1,2,3
First Module P1 P2 P3 Physics Revision
Question | Answer |
---|---|
Advantages of Photocells | - No moving parts - Don't need power cables - Solar power won't run out (it's renewable) |
Disadvantages of Photocells | - When there is no sunlight there is no power |
Electromagnetic Induction | The creation of a voltage (and maybe current) in a wire which is experiencing a change in magnetic field. |
To get a bigger voltage, you can increase... | ...the strength of magnet...the number of turns on the coil...the speed of movement. |