Basic Flashcards
7 cards from real CBET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Basic flashcards as text
Which type of current flows in only one direction through a circuit?
Answer: Direct current (DC)
Direct current (DC) flows in a single, constant direction, unlike AC which reverses direction periodically.
What is the unit of electrical resistance?
Answer: Ohm
The ohm (Ω) is the SI unit of electrical resistance, named after Georg Simon Ohm.
In a parallel circuit, what remains the same across all branches?
Answer: Voltage
In a parallel circuit, all branches share the same voltage, while current may differ in each branch.
What does a capacitor store?
Answer: Electrical charge
A capacitor stores electrical charge (and thus energy) in an electric field between its plates.
Which standard organization publishes guidelines for medical device electrical safety in the US?
Answer: AAMI
The Association for the Advancement of Medical Instrumentation (AAMI) publishes standards for medical device safety including AAMI ES60601.
The microampere (μA) is equal to how many amperes?
Answer: 10⁻⁶ A
One microampere equals 10⁻⁶ amperes, which is the range relevant to leakage current limits for patient-connected devices.
What is the primary purpose of an isolation transformer in a medical environment?
Answer: Isolate patients from line voltage ground faults
Isolation transformers break the direct connection to earth ground, protecting patients from electric shock if a line fault occurs.