Advertisements
Advertisements
Question
Advertisements
Solution
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
RELATED QUESTIONS
Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω
Define the following:
Semiconductors
Find the effective resistance in the following circuit diagrams (Fig.):
An electric oven is rated as 1.5 kW, 250 V. If it is connected to a 250 V mains, calculate the
(a) Current drawn,
(b) Energy consumed in 20 hours,
(c) Cost of energy consumed in 20 hours at the rate of Re. 1 per unit.
An auto lamp is joined to a battery of e.m.f. 4 V and internal resistance 2.5Ω. A steady current of 0.5 A flows through the circuit. Calculate the
(a) Total energy provided by battery in 10 minutes,
(b) Heat dissipated in the bulb in 10 minutes.
A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
Water : pipe :: Electric current : ______.
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
