Answer:
The average induced emf is 2.5 V.
(A) is correct option.
Explanation:
Given that,
Number of turns = 10
Length of side = 1 m
change in magnetic field = 4-2=2 T
Time t = 8 sec
We need to calculate the average induced emf
Using formula of induced emf
Where,
N = number of turns
A = area of cross section
B = magnetic field
t = time
Put the value into the formula
Hence, The average induced emf is 2.5 V.
Explanation:
using the formula: S=ut+½gt², where u=0, S=?, g=8m/s², t=10seconds.
S=ut+½gt² ("ut" term will cancel because u=0).
=> S= ½gt²
=>S = ½×8×10²
=>S = 4×100
=>S = 400m .
Therefore, the distance traveled by the body in 10s is 400m.
hope this helps you.
Answer:
If the two forces applied to an object act in the same direction ,then the resultant force acting on the object is equal to the sum of two forces: When two forces act in the same direction their effective magnitude increases
Explanation:
Heating up water in a pot on a stove