The current in the circuit =5 A
Explanation:
Voltage = 60 V
resistance= 12 ohm
using ohm's law V=i R
60= i (12)
i=60/12
i=5 A
Thus the current flowing in the circuit = 5 A
Answer: e) turbidity
Explanation:
Evaporation is defined as the process by which a liquid without being heated is converted into vapor.
The factors that affect the rate of evaporation of a liquid are:
a) humidity-When the humidity of an environment is high, it will take more time for water to escape to the atmosphere and less time, if the reverse is the case because Humidity is the amount of water vapor in the atmosphere. For example, on a rainy day, clothes tend to dry slower than a sunny day.
b) nature of liquid- different liquids have different rate of evaporation, For example, alcohol will evaporate faster than water
c) pressure - The higher the pressure on the surface of a body of water, the slower the evaporation rate and vice versa.
d) temperature- The temperature of a surrounding affect how fast a liquid ,(water) can evaporate. When the temperature of the liquid is increased, it raises the kinetic energy of the individual molecules that make up the liquid thereby reducing the inter molecular forces of attraction holding the liquid together and causing fast escape into the atmosphere as a vapor or gas
e) turbidity shows the extent water loses its transparency due to the presence of suspended particles lie clay, silt, organic matter etc and so is not a factor that affect rate of evapouration
Answer:
(a) q=3.07 nC
(b) σ=17 nC/m²
Explanation:
Given data
Radius r=0.12m
Potential V=230 V
To find
(a) Charge q
(b) Charge density σ
Solution
For Part (a)
As we know that potential is:
Substitute the given values
For Part (b)
The charge density is given by:
σ=q/(4πr²)
Substitute the given values and value of q to find charge density
So
σ=17 nC/m²
Answer:F=648 N
Explanation:
Given
mass of man 
mass of Platform 
acceleration of system 
Let F be the force with which man pulls the rope which will also create a tension of F in rope
From Diagram
