Read the following statements.
I. Battery-less phones can convert radio signals into power.
II. The semiconductor device rectenna can be used to provide battery-less power only for smartphones.
III. Wi-fi signals captured by an integrated antenna are converted into a DC current suitable for electronic circuits.
Choose the correct option.

Options

A. I and II
B. I and III
C. II and III
D. I, II and III

Answer

B

Explanation

Battery-less phones has the ability to convert radio signals into power. The semiconductors device rectenna can be used to provide battery-less power for smartphone, laptops, medical devices and wearable technology.