Class 12PhysicsMoving Charges and MagnetismThe Moving Coil Galvanometer (Sensitivity) and Ammeter and Voltmeter Conversion
EasyCertain galvanometers have a fixed core made of non-magnetic metallic material. The function of this metallic material is
- Ato oscillate the coil in magnetic field for a longer period of time
- Bto bring the coil to rest quickly
- Cto produce a large deflecting torque on the coil
- Dto make the magnetic field radial
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Similar Questions
The ratio of heats generated through shunt and galvanometer is $7: 5$ when they are connected to make an ammeter. If the resistance of the galvanometer is $112 \Omega$,then the resistance of the shunt is: (in $Omega$)
$A$ galvanometer of resistance $G$ is shunted by a resistance $S$. To keep the main current in the circuit unchanged,what value of resistance should be connected in series with the galvanometer?
Difficult
View Solution$A$ galvanometer of resistance $100 \Omega$ requires $10 \mu A$ current for full-scale deflection. If a shunt resistance of $1 \Omega$ is connected in parallel to convert it into an ammeter, what is the minimum current required to obtain full-scale deflection (in $\text{ mA}$)?
DifficultMHT CET 2020
View SolutionIn a suspended-type moving coil galvanometer,a quartz suspension is used because:
Easy
View SolutionWhen a galvanometer is shunted by a resistance $s$,its current capacity increases $n$ times. If the same galvanometer is shunted by another resistance $s_1$,its capacity will increase to $n_1$ times the original current. The value of $n_1$ is
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