Advertisements
Advertisements
प्रश्न
A charge of 80 C flows in a conductor for 2 minutes.
(a) Calculate the current flowing through the conductor.
(b) If the current through a heater is 4 A what charge must be passing in 8 seconds?
Advertisements
उत्तर
(a) Given, charge q = 80 C, time t = 2 minutes= 120 s
current, I = `"q"/"t" = 80/120` = 0.67 A
(b) Given, current I= 4 A, time = 8 s
Let q be the charge pas sing in 8s
Then, q =It = 4 x 8 = 32 C
APPEARS IN
संबंधित प्रश्न
Choose the correct alternative and rewrite the following sentence.
When the resistance of a conductor increases, the current will ________ increase.
(a) With the help of a circuit diagram, obtain the relation for the equivalent resistance of two resistances connected in parallel.
(b) In the circuit diagram shown below, find:
(i) Total resistance.
(ii) Current shown by the ammeter A
What happens to the other bulbs in a series circuit if one bulb blows off?
Tick(✓) the correct choice in the following:
24 watt, 12 volt head lamp is fully lit by connecting it to a 12 volt
battery. The working resistance of the lamp is
Tick(✓) the correct choice in the following:
The outer casing of an electric iron is generally connected to earth in order
to
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
Tick (✓) the correct choice among the following :
Which of the following changes would enable a millimeter to be used as a
direct current ammeter reading upto 1 A?
Study the following circuit and find out:
(i) Current in 12 Ω resistor.
(ii) The difference in the readings of A1 and A2, if any.
Water : pipe :: Electric current : ______.
Define the following:
Conventional current
