You are a scientist who has to make a satellite to send into orbit in outer space. Which of these will you use as a source of power in the satellite?
(a) dry cells
(b) solar cells
(c) rechargeable cells of the type used in cars
(d) rechargeable button cells

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Solution

(b) Solar cells
Solar cells are used because solar cells directly convert solar energy into electrical energy. Since, satellites in orbit are exposed to large amount of sunlight, they can power their systems using solar cells.

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Q. Which of these cells will you use in a communication satellite that is expected to circle the earth for several years?
(a) dry cells
(b) button cells
(c) car cells
(d) solar cells

Q. Assertion: Dry cell is a primary cell and lead storage cell is a secondary cell.
Reason: A primary cell can only be used once while secondary cells are rechargeable.

Q. In many applications, solar cells are connected to rechargeable batteries. Why is this so ?

An arrangement having two carbon rods kept in a conducting liquid in a vessel is known as :
(a) rechargeable cell
(b) storage cell
(c) biological cell
(d) electrolytic cell

Question 14

When the chemicals in the electric cell are used up, the electric cell stops producing electricity. The electric cell is then replaced with a new one. In case of rechargeable batteries (such as the type used in mobile phones, camera and inverters), they are used again and again. How?

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You are a scientist who has to make a satellite to send into orbit in outer space. Which of these will you use as a source of power in the satellite? (a) dry cells (b) solar cells (c) rechargeable cells of the type used in cars (d) rechargeable button cells

(b) Solar cellsSolar cells are used because solar cells directly convert solar energy into electrical energy. Since, satellites in orbit are exposed to large amount of sunlight, they can power their systems using solar cells.

You are a scientist who has to make a satellite to send into orbit in outer space. Which of these will you use as a source of power in the satellite?
(a) dry cells
(b) solar cells
(c) rechargeable cells of the type used in cars
(d) rechargeable button cells

(b) Solar cells
Solar cells are used because solar cells directly convert solar energy into electrical energy. Since, satellites in orbit are exposed to large amount of sunlight, they can power their systems using solar cells.