Questions in Current Electricity

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In order to pass 10% of main current through a moving coil galvanometer of 99 ohm, the resistance of the required shunt is
An ammeter of 5 ohm resistance can read 5 mA. If it is to be used to read 100 volts, how much resistance is to be connected in series
The potential gradient along the length of a uniform wire is $10\,volt/metre$. $B$ and $C$ are the two points at $30\,cm$ and $60\,cm$ point on a meter scale fitted along the wire. The potential difference between $B$ and $C$ will be
$100\,mA$ current gives a full scale deflection in a galvanometer of $2\,\Omega $ resistance. The resistance connected with the galvanometer to convert it into a voltmeter to measure $5\,V$is
When a $12\,\Omega $ resistor is connected with a moving coil galvanometer then its deflection reduces from 50 divisions to 10 divisions. The resistance of the galvanometer is
A galvanometer can be used as a voltmeter by connecting a
The tangent galvanometer, when connected in series with a standard resistance can be used as
In Wheatstone's bridge $P = 9$ ohm, $Q = 11$ ohm, $R = 4$ ohm and $S = 6$ ohm. How much resistance must be put in parallel to the resistance $S$ to balance the bridge
A Daniel cell is balanced on 125$cm$ length of a potentiometer wire. Now the cell is short-circuited by a resistance 2 ohm and the balance is obtained at 100$cm$. The internal resistance of the Daniel cell is
Sensitivity of potentiometer can be increased by

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