Physics Test 28

Result

Physics Test 28

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Weekly Quiz Competition

Question 1
4 / -1

Two capacitors C₁ and C₂ are charged to 120 V and 200 V respectively. It is found that by connecting them together the potential on each one can be made zero. Then:

A
3C₁= 5C₂

B
3C₁= 5C₂= 0

C
9C₁= 4C₁

D
5C₁= 3C₂

Solution

If we connect the opposite terminals together or otherwise, the potential difference between each connecting plate will be zero.

Hence, 120C₁ = 200C₂
6C₁ = 10C₂
3C₁ = 5C₂
Hence option A is correct.
Question 2
4 / -1

The magnetic lines of force inside a bar magnet

A
are from north-pole to south-pole of the magnet

B
do not exist

C
depend upon the area of cross-section of the bar magnet

D
are from south-pole to north-pole of the magnet.

Solution

The magnetic lines of force inside a bar magnet are from south pole to north pole of the magnet.
Hence, option D is correct.