Question

What possible values of resistance are get by combining two resistance, one of value 2 W and other 6 W?

Answer 1

Explanation:

when both are connected in series then

equivalent resistance will be 6+2 =8ohm

When they are in parallel then equivalent resistance will be 6×2/6+2=12/8=3/2=1.5ohm

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Answer 2

The mass of the moon is (1/8) of the earth but the gravitational pull is (1/6) of the earth. It is due to the fact that:

A .

moon is the satellite of the earth

B .

the radius of the earth is (8/6) of the moon

C .

the radius of the earth is (8/6) of the moon

D .

the radius of the moon in (6/8) of moon

gEgM=RE2GMERM2G(ME/8)=8RM2RE2              ....(i)

where the sunscripts M and E are for the moon and the earth respectively.

Given, gEgM=61                             .....(ii)

From (i) and (ii), we get

8RM2RE2=61 or