The current decreases as the overall resistance increases. In addition, if one bulb is removed from the “chain” the other bulbs go out. ... If light bulbs are connected in parallel to a voltage source, the brightness of the individual bulbs remains more-or-less constant as more and more bulbs are added to the “ladder”.
Answer:
Explanation:
= Permeability of free space =
d = Diameter of core = 12 mm
r = Radius =
l = Length of core = 8.4 cm
N = Number of turns = 123
Inductance is given by
The self-inductance of the solenoid is
Answer:
The horizontal speed is approximately 29 m/s.
Explanation:
Given that; range = 80 meters, height = 37 meters.
The horizontal speed can be determined by:
R = U
Where R is the range, U is the velocity of the object, H is the height and g is the acceleration due to gravity (9.8 m/).
So that:
80 = U
= U
= U
80 = 2.747912U
⇒ U =
= 29.1130
U ≅ 29 m/s
The horizontal speed is approximately 29 m/s.
Answer:
I = 2 kgm^2
Explanation:
In order to calculate the moment of inertia of the door, about the hinges, you use the following formula:
(1)
I: moment of inertia of the door
α: angular acceleration of the door = 2.00 rad/s^2
τ: torque exerted on the door
You can calculate the torque by using the information about the Force exerted on the door, and the distance to the hinges. You use the following formula:
(2)
F: force = 5.00 N
d: distance to the hinges = 0.800 m
You replace the equation (2) into the equation (1), and you solve for α:
Finally, you replace the values of all parameters in the previous equation for I:
The moment of inertia of the door around the hinges is 2 kgm^2
Answer:
The magnetic flux density is
Explanation:
Given that,
Distance = 0.36 m
Current = 3.8 A
We need to calculate the magnetic flux density
Using formula of magnetic field
Where,
r = radius
I = current
Put the value into the formula
Hence, The magnetic flux density is