Author Question: How is ultrasound used in leak detection? A) It amplifies the sound of a leakage. B) It makes ... (Read 55 times)

elizabeth18 · **on:** Jul 24, 2018

How is ultrasound used in leak detection?

A) It amplifies the sound of a leakage. B) It makes exiting gases visible.
C) It causes the formation of bubbles near a leak. D) It allows for a visual close-up of the system.

Question 2

In a basic electric circuit with a fixed resistance, when voltage increases:

A) Current increases.
B) Current remains the same.
C) Current decreases.
D) The voltage has no effect on the current in an electric circuit.