A galvanometer having a resistance of 8 ohms is shunted by a wire of resistance 2 ohms. If the total current is 1 amp., the part of it passing through the shunt will be :
Here, $$V_G=V_S$$
so $$I_G G=I_S S$$
or $$(I-I_S)G=I_SS$$
or $$I_S=\dfrac{IG}{G+S}=\dfrac{1\times 8}{8+2}=0.8 A$$
A voltmeter coil has resistance $$50.0 \Omega$$ and a resistor of $$1.15 \ k\Omega$$ is connected in series, It can read potential difference an ammeter which $$12 volts$$. If this same coil is used to construct an ammeter which can measure currents up to $$2.0 A$$, what should be the resistance of the shunt used?
An ammeter is to be constructed which can read currents up to $$2.0 A$$. If the coil has a resistance of $$25 \Omega$$ and takes $$1 mA$$ for full-scale deflection, what should be the resistance of the shunt used?
A galvanometer of resistance $$40\Omega$$ gives a deflection of $$5$$ divisions per $$mA$$. There are $$50$$ divisions on the scale. The maximum current that can pass through it when a shunt resistance of $$2\Omega$$ is connected is:
An ammeter gives full scale deflection with a current of $$1\ amp$$. It is converted into an ammeter of range $$10\ amp$$. The ratio of the resistance of ammeter to the shunt resistance used will be :
If the ammeter is to be used in place of voltmeter, then we must connect with the ammeter a
The resistance of $$1\ A$$ ammeter is $$0.08 \Omega$$. To convert it into $$10\ A$$ ammeter, the shunt resistance required will be
A galvanometer of $$10 \ ohm$$ resistance gives full scale deflection with $$0.01$$ ampere of current. It is to be converted into an ammeter for measuring $$10 $$ ampere current. The value of shunt resistance required will be
The resistance of a galvanometer coil is $$R$$. What is the shunt resistance required to convert it into an ammeter of range $$4$$ times
A galvanometer has a resistance of $$25 \ ohm$$ 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
A $$100\ ohm$$ galvanometer gives full scale deflection at $$10\ mA$$. How much shunt is required to read $$100\ mA$$