As the external magnetic field decreases, an induced current flows in the coil. The direction of the induced magnetic field would be pointing to the screen. The flux through the coil is said to decrease. In order to counter this change, the coil would generate or produce a magnetic field that is induced that would be pointing to the same direction as the external field that is flowing which is into the the screen. This is according to Lenz's law or the right hand rule. It states that an induced current in a circuit that is due to the change or motion in magnetic field should be directed opposing to the change in the flux.
Answer:
EMF induced in the loop is 9.4 V
Explanation:
As we know that initial magnetic flux of the loop is given as



As soon as the area of the loop becomes zero the final magnetic flux of the loop is ZERO
Now as per faraday's law of electromagnetic induction the EMF is induced due to rate of change in magnetic flux
so we will have

so we will have


Answer:
The specific heat is 3.47222 J/kg°C.
Explanation:
Given that,
Temperature = 13°C
Temperature = 37°C
Mass = 60 Kg
Energy = 5000 J
We need to calculate the specific heat
Using formula of energy


Put the value into the formula


Hence, The specific heat is 3.47222 J/kg°C.
Answer:
any person who opens the door he applies pulling force
Answer:
Qa/Qb = k/2×2k = 1/4
Explanation:
a situation is series and b situation is parallel.
let conductance of each plate = k
so net conductance in series = k/2
net conductance in parallel = 2k
so Qa/Qb = k/2×2k = 1/4