Answer:
we have to apply force to move something things wants to save their position and if we want to change it
we have too apply force
A) Volume of cuboid = length *breadth*height
=10*2*2=40cm^3
B)time period of one pendulum = no.of oscillations/time= 10/8= 5/4
C) 3 bars
The reversing of the magnet polarity will explain the different current reading.
Answer: Option D
<u>Explanation:</u>
According to Faraday's law of inductance, whenever a bar magnet is moved toward a stationary coil at constant speed, current will be generated in that coil. So in this case, the first maximum current in the above situation say A is recorded successfully.
Similarly, when the arrangement is kept as it is, in situation B, the current is observed to have different reading. This may be because of the polarity of the magnet would have changed leading to different current reading.
