Questions in Current Electricity

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	A 100 ohm galvanometer gives full scale deflection at 10 mA. How much shunt is required to read 100 mA
	The potential difference across the 100$\Omega$ resistance in the following circuit is measured by a voltmeter of 900 $\Omega$ resistance. The percentage error made in reading the potential difference is
	A cell of internal resistance 3 ohm and emf 10 volt is connected to a uniform wire of length 500 cm and resistance 3 ohm. The potential gradient in the wire is
	An ammeter of 100 $\Omega$ resistance gives full deflection for the current of $10^{–5}$ amp. Now the shunt resistance required to convert it into ammeter of 1 amp. range, will be
	A galvanometer of resistance 36 $\Omega$ is changed into an ammeter by using a shunt of 4 $\Omega$. The fraction f0 of total current passing through the galvanometer is
	If the ammeter in the given circuit reads 2 A, the resistance R is
	A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A passes through the coil. When it is converted to a 10 A ammeter, the shunt resistance is
	Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm respectively. If the resistances are interchanged the balance point shifts by
	A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is $10^{–7}$ ohm–meter and the current passing through it is 0.1 ampere; cross-section of the wire is $10^{–6}m^2$. The potential gradient along the potentiometer wire is
	Two resistances of 400 $\Omega$ and 800 $\Omega$ are connected in series with 6 volt battery of negligible internal resistance. A voltmeter of resistance 10,000 $\Omega$ is used to measure the potential difference across 400 $\Omega$. The error in the measurement of potential difference in volts approximately is

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