C B B C D
also why is this question under physics lol
Explanation:
Trees, because of their height, are natural lightning rods. Electricity seeks the path of least resistance, and the moisture inside a tree is a much better conductor than air. This means a tree provides the preferred path for lightning to reach the ground.
Answer:it’s 10N
Explanation:So 30N is going left and 20N is going right so you would subtract it because they are going opposite ways if they where going the same why then you would add them.
Answer:
Explanation:
Before the dialectic was inserted the capacitor is Co
When the slab is inserted,
The capacitor becomes
C=kCo
The charge Q is given as
Q=CV
Then, when C=Co
Qo=CoV
Then, when C=kCo
Q=kCoV
Then, the change in charges is given as
Q-Qo= kCoV - CoV
∆Q= kCoV - CoV
Current is given as
I=dQ/dt
I= (kCoV - CoV) / dt
I=Co(kV-V)/dt
Note Co is the value capacitor
So, Capacitance of parallel plates capacitor is given as
Co=εoA/d
Then,
I=εoA(kV-V)/d•dt
I=VεoA(k-1)/d•dt
Where A=πr²
I = V•εo•πr²•(k-1) / d•dt
This is the required expression for current is in the required term
Answer:
The answer is: The increased voltage causes an increase in power usage, and the device will over-heat.
Explanation:
First, we must consider the variables of the electrical system that will allow us to respond. In this case, power, current and voltage, which are related by
![P=VI](https://tex.z-dn.net/?f=P%3DVI)
Where P=Power, V=Voltage, I=Current.
In the equation it can be observed that power is directly proportional to the system voltage. Thus, if the voltage increases as in this case, the power will also increase, which overheats the device and can cause damage to it.