Answer:
The answer is True.
Explanation:
Open circuit means incomplete flow of current in a circuit.
When switch is off, the electric current cannot flow throught the circuit for a complete circuit.
The frequency can be defined as the inverse of the period, that is, it can be expressed as
![T = \frac{1}{f}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7Bf%7D)
Here,
T = Period
f = Frequency
For each value we only need to replace the value and do the calculation:
PART A)
![T = \frac{1}{f}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7Bf%7D)
![T = \frac{1}{60Hz}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7B60Hz%7D)
T = 0.0166s
PART B)
![T = \frac{1}{f}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7Bf%7D)
![T = \frac{1}{8*10^6}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7B8%2A10%5E6%7D)
![T = 1.25*10^{-7} s](https://tex.z-dn.net/?f=T%20%3D%201.25%2A10%5E%7B-7%7D%20s)
PART C)
![T = \frac{1}{f}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7Bf%7D)
![T = \frac{1}{140*10^{3}}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7B140%2A10%5E%7B3%7D%7D)
![T = 7.14*10^{-6}s](https://tex.z-dn.net/?f=T%20%3D%207.14%2A10%5E%7B-6%7Ds)
PART D)
![T = \frac{1}{f}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7Bf%7D)
![T = \frac{1}{2.4*10^{9}}](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B1%7D%7B2.4%2A10%5E%7B9%7D%7D)
![T = 4.166*10^{-10}s](https://tex.z-dn.net/?f=T%20%3D%204.166%2A10%5E%7B-10%7Ds)
Answer:
a,b,c and d.
Explanation:
Of the following statements the correct are:
a) It is possible to induce a current in a closed loop of wire located in a uniform magnetic field by either increasing or decreasing the area enclosed by the loop.
b) It is possible to induce a current in a closed loop of wire without the aid of a power supply or battery.
d) It is possible to induce a current in a closed loop of wire by change the orientation of a magnetic field enclosed by the wire.
e) It is possible to induce a current in a closed loop of wire by changing the strength of a magnetic field enclosed by the wire.
Answer:
C part of the wave was reflected back into the original medium
Explanation: