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संबंधित प्रश्न
Which particles constitute the electric current in a metallic conductor?
The following circuit diagram shows three resistors 2 Ω, 4 Ω and R Ω connected to a battery of e.m.f 2V and internal resistance 3 Ω. If the main current of 0.25 A flows through the circuit, find:
- the p.d. across the 4 Ω resistors,
- the p.d. across the internal resistance of the cell,
- the p.d. across the R Ω or 2 Ω resistors, and
- the value of R.
Complete the following sentence:
A fuse is connected in ........... with the ......... wire.
Tick(✓) the correct choice in the following:
When the length of a conductor is doubled the resistance of the conductor
will
Find the effective resistance in the following circuit diagrams (Fig.):
If the potential differences between two parts of a thundercloud is 10s V,
what is the amount of energy given up during the passage of 20 coulombs?
(a)2x10-7J
(b)200J
(c)Sx106 j
(d)2x 109J
(e)2x 1010 J
A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross section of the filament in 16 seconds would be roughly
What is the SI unit for the current?
