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1.
The reciprocal of resistance is
2.
To decrease the range of an ammeter, its resistance need to be increased. An ammeter has resistance 
and range I. Which of the following resistance can be connected in series with it to decreases its range to 
?
and range I. Which of the following resistance can be connected in series with it to decreases its range to ?
3.
The reading of the ammeter as per figure shown is
4.
The accurate measurement of emf can be obtained using
5.
Three unequal resistors in parallel are equivalent to a resistance 1
. If two of them are in the ratio 1:2 and if no resistance value is fractional, the largest of the three resistance in ohm is
. If two of them are in the ratio 1:2 and if no resistance value is fractional, the largest of the three resistance in ohm is
6.
A current of 
passing through conductor produces 
of heat in 
The resistance of the conductor is
passing through conductor produces of heat in The resistance of the conductor is
7.
In a copper voltmeter , if the current (
and time 
variations of the type as shown in figure, the mass deposited in 30 min is [Atomic weight of copper is 63.5 and Faraday constant is 96500 C per g equivalent]
and time variations of the type as shown in figure, the mass deposited in 30 min is [Atomic weight of copper is 63.5 and Faraday constant is 96500 C per g equivalent]
8.
The graph between resistivity and temperature, for a limited range of temperatures, is a straight line for a material like
9.
A potentiometer circuit shown in the figure is set up to measure e.m.f. of a cell 
As the point 
moves from 
to 
the galvanometer 
shows deflection always in one direction, but the deflection decreases continuously until is reached. In order to obtain balance point between and it is necessary to
As the point moves from to the galvanometer shows deflection always in one direction, but the deflection decreases continuously until is reached. In order to obtain balance point between and it is necessary to
10.
The relation between Seeback coefficient (or thermo electric power)
and Peltier coefficient 
is given by
and Peltier coefficient is given by