Answer:
5.152 A
Opposite to the inner coil
Explanation:
= Vacuum permeability =
= Outer coil current
= Inner coil current = 5 A
= Turns in inner coil = 120
= Turns in outer coil = 165
= Inner radius = 0.012 m
= Outer radius = 0.017 m
Putting the magnetic field as equal we have
The magnitude of current is 5.152 A,
The direction of the current is opposite to that of the inner coil as they have opposing magnetic fields
The correct answer is: The voltage drop across
is
45V.Explanation:First you need to find the total current of the circuit, which is:
According to Ohm's law:
V = I * R
I = V/R --- (1)
Where
R = Total Equivalent resistance of the circuit
V = Total Voltage = 90V
I -= Total Current
First let us find the equivalent resistance:
Now plug in the values in (1):
(1) => I = 90/30 = 3A
Now that we have current of the circuit, we can now find the voltage
drop across
= 15 ohms using:
Where
is the voltage drop across resistor 5;
Answer:
Acceleration is the variation of Velocity in time :
(1)
This can be written as:
(2)
Where:
is the final velocity
is the initial velocity
is the final time
is the initial time
<u>Finally:</u>
The negative sign means the car is desaccelerating
Answer:
Explanation:
Given data:
v = 220 rms
power factor = 0.65
P = 1250 W
New power factor is 0.9 lag
we knwo that
s = 1923.09 < 49.65^o
s = [1250 + 1461 j] vA
solving for
Faraday
To solve this problem we will apply Pascal's principle for which we know that the pressure relation between two surfaces under the same fluid is given by the relation between the applied force and the area which receives-prints the force. Mathematically this is,
For the relation given we have,
Replacing,
Finally we have that the work done on both sides should be equal then