# GENERAL KNOWLEDGE

## GK

### UNITS DEVICES DIMENSIONS AND MEASUREMENTS

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is used to measure Magnetic flux?
 A lux B weber C angstrom D light year
Explanation:

Detailed explanation-1: -The SI unit of magnetic flux is the weber (Wb; in derived units, volt–seconds), and the CGS unit is the maxwell. Magnetic flux is usually measured with a fluxmeter, which contains measuring coils, and it calculates the magnetic flux from the change of voltage on the coils.

Detailed explanation-2: -In physics, the weber (/ˈveɪb-, ˈwɛb. ər/ VAY-, WEH-bər; symbol: Wb) is the unit of magnetic flux in the International System of Units (SI), whose units are volt-second. A magnetic flux density of one Wb/m2 (one weber per square metre) is one tesla.

Detailed explanation-3: -A fluxmeter measures changes in magnetic flux, as detected through a Helmholtz or similar coil arrangement. Functionally, a fluxmeter consists of a pickup coil and an electronic integrator, as shown in Figure 10-1.

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