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प्रश्न
The work done in moving a unit charge across two points in an electric circuit is a measure of ______.
विकल्प
current
potential difference
resistance
power
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उत्तर
The work done in moving a unit charge across two points in an electric circuit is a measure of potential difference.
संबंधित प्रश्न
Calculate the number of electrons constituting one coulomb of charge.
One coulomb charge is equivalent to the charge contained in:
(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons
Which of the two is connected in series : ammeter or voltmeter?
Name two effects produced by electric current.
Define the term resistivity.
The diagram shows two ways of connecting three lamps P, Q and R to A.C. supply of 220 V.


Tick(✓) the correct choice in the following:
When the length of a conductor is doubled the resistance of the conductor
will
Two resistors P and Q of the same material and length but of different thickness are connected in parallel to a battery. The cross- sectional area of P is twice that of Q. What is the ratio of
(a) The resistance of P to the resistance of Q?
(b) The current in P to the current in Q?
Two cells each having an e.m.f. of 2 V and an internal resistance of 2Ω are
connected (a) In series, and ( b) In para 1le l as shown in fig. . What is the
current flowing through the cir cu it in each_ case?

What determines the direction of flow of electrons between two charged conductors kept in contact?
