Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
The charge on one electron is 1. 6 x 10-19 coulombs.
Therefore, lC charge carries `(1/(1.6 xx 10^19))` = 6.25 x 1018 electrons.
APPEARS IN
संबंधित प्रश्न
1 A = _________ mA
- 102
- 103
- 10-3
- 10-6
Calculate the number of electrons constituting one coulomb of charge.
If the current through a floodlamp is 5 A, what charge passed in 10 seconds?
(a) 0.5 C
(b) 2 C
(c) 5 C
(d) 50 C
Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.
Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an â’¶ on your diagram to show where an ammeter should be placed to measure the current.
A switch must be connected in:
(a) Live wire (b) neutral wire
(c) earth wire (d) either earth or neutral wire
A cell supplies a current of 1.2 A through two 2 Ω resistors connected in parallel. When the resistors are connected in series, it supplies a current of 0.4 A. Calculate:
(i) the internal resistance and (ii) e.m.f. of the cell.
Tick(✓) the correct choice in the following:
The outer casing of an electric iron is generally connected to earth in order
to
State whether true or false. If false, correct the statement.
Current can produce magnetic field.
What does the direction of current convey?
