Answer:
Explanation:
B = Magnetic field = 1.1 T
L = Length of square = 10.4 cm
A = Area of square =
t = Time taken
V = Voltage = 120 V
N = Number of turns = 350
= Angular frequency
Voltage in the generator is given by
Voltage is maximum when
The minimum rotation rate of the coil so it will produce the required voltage is
Answer:
23 cm
Explanation:
The formula for magnification is;
Magnification = image distance / object distance
use values as;
3.2 = v / 30 where v is image distance
v =30*3.2
v=96 cm
The relationship of the focal length with image distance and object distance is expressed as;
where f is the focal length and u is object distance
use values in the equation as;
f=160/7
f=22.86
f= 23 cm ----------nearest a cm
Answer:
Explanation:
Let the area of each plate be A.
From Gauss Law,
Thus, using Gauss law, electric field between the plates is:
Answer:
according to newtons second law of motion,
Force = mass * acceleration
The acceleration of the body is directly proportional to the net force acting on the body and inversely proportional to the mass of the body.
I. e mass and acceleration are directly proportional to each other.