A moving coil galvanometer of resistance 100 | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The galvanometer resistance $G = 100 \,\Omega$ and shunt resistance $S = 0.1 \,\Omega$.The maximum current through the galvanometer is $I_G = 100

Vedclass · Accepted Answer

$100.1$

Vedclass · Answer

(A) The galvanometer resistance $G = 100 \,\Omega$ and shunt resistance $S = 0.1 \,\Omega$.The maximum current through the galvanometer is $I_G = 100 \,\mu A = 100 	imes 10^{-6} \, A = 0.1 \, mA$.For an ammeter,the shunt resistance $S$ is connected in parallel with the galvanometer.The potential difference across the galvanometer and the shunt is the same: $I_G 	imes G = (I - I_G) 	imes S$.Rearranging for the total current $I$: $I = I_G \left( 1 + \frac{G}{S} ight)$.Substituting the values: $I = 0.1 \, mA 	imes \left( 1 + \frac{100}{0.1} ight)$.$I = 0.1 \, mA 	imes (1 + 1000) = 0.1 	imes 1001 \, mA$.$I = 100.1 \, mA$.

$A$ moving coil galvanometer of resistance $100 \,\Omega$ is used as an ammeter using a shunt resistance of $0.1 \,\Omega$. The maximum deflection current in the galvanometer is $100 \,\mu A$. Find the minimum current in the circuit so that the ammeter shows maximum deflection in $mA$.

Similar Questions

$A$ galvanometer has a resistance of $25 \, \Omega$ and a maximum of $0.01 \, A$ current can be passed through it. In order to change it into an ammeter of range $10 \, A$, the shunt resistance required is

The scale of a galvanometer is divided into $160$ equal divisions. The galvanometer shows full scale deflection of $16$ mA and maximum voltage is $80$ mV. Now the range is changed so that the galvanometer reads $160$ $V$. The required resistance to be connected is

To convert a galvanometer into a voltmeter,one should connect a

$A$ galvanometer of resistance $50 \Omega$ gives a full-scale deflection for a current of $5 \times 10^{-4} \text{ A}$. The resistance that should be connected in series with the galvanometer to read $3 \text{ V}$ is: (in $\Omega$)

What is the function of the spiral spring in the construction of a galvanometer?

Vedclass Test Series

Exam Paper Generator

Online Exam Module