XtraStudy Header

⁞ Electrical and Electronics Engineering

Engineering ➤ Electrical and Electronics Engineering ➤ Voltage-Current-And-Resistance
Question 6
Q6.  A circuit breaker is a
 

Answer :  resettable protective device


A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current, typically resulting from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
⚔ DISCUSS

Question 7
Q7.  An ammeter is an electrical instrument used to measure
 

Answer :  current


An ammeter (from Ampere Meter) is a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes (A), hence the name. Instruments used to measure smaller currents, in the milliampere or microampere range, are designated as milliammeters or microammeters.
⚔ DISCUSS

Question 8
Q8.  An ohmmeter is an instrument for measuring
 

Answer :  resistance


An ohmmeter is an electrical instrument that measures electrical resistance, the opposition to an electric current. Micro-ohmmeters (microhmmeter or microohmmeter) make low resistance measurements. Megohmmeters measure large values of resistance. The unit of measurement for resistance is ohms (Ω).
⚔ DISCUSS

Question 9
Q9.  Materials with lots of free electrons are called
 

Answer :  conductors


A conductor is an object or type of material that allows the flow of an electrical current in one or more directions. A metal wire is a common electrical conductor. Electrical current is generated by the flow of negatively charged electrons, positively charged holes, and positive or negative ions in some cases.
⚔ DISCUSS

Question 10
Q10.  Current flows in a circuit when
 

Answer :  a switch is closed


Current flows in a circuit when a switch is closed.
⚔ DISCUSS

Comments
Comments (0)


XtraStudy
Explore
Explore
About
App Link
xtrastudy android app
Others

Earn While You Learn
FAQ

Register Now

© 2022 Company, Inc. All rights reserved.