1.
A resistor of 10 Ω is connected across a 20 V battery having negligible internal resistance. The current through the resistor is
2.
The drift velocity of electrons is directly proportional to
3.
If the diameter of a wire is doubled, keeping length unchanged, its resistance becomes
4.
A potentiometer is preferred over a voltmeter for measuring EMF because it
5.
Kirchhoff's junction rule is based on conservation of
6.
The equivalent resistance of two resistors 6 Ω and 3 Ω connected in parallel is
7.
The resistivity of a conductor depends upon
8.
The SI unit of conductance is
9.
Maximum power is transferred from a source to a load when
10.
The resistance of an ideal voltmeter is
11.
If current through a resistor is doubled, the heat produced per second becomes
12.
The terminal voltage of a cell becomes equal to its EMF when
13.
Which instrument works on the null-deflection principle?
14.
The current density in a conductor depends on
15.
For a given conductor, resistance varies inversely with
16.
Three equal resistors are connected in series. If one resistor burns out, the circuit becomes
17.
The commercial unit "1 kWh" represents
18.
The colour bands on a resistor are used to determine its
19.
If two identical cells are connected in parallel, the equivalent EMF is
20.
A conductor obeys Ohm's law if
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