Advertisements
Advertisements
प्रश्न
Calculate the amount of energy transferred by a 10 A electric current flowing through a resistor of 5 o for 15 minutes.
Advertisements
उत्तर
As per Joule's law,
H=I2Rt
Here, I= 10 A, R = 5`Omega` and t=15 mins = 900s
H = (10)2 x 5 x (900) = 4.5 x 105 J
APPEARS IN
संबंधित प्रश्न
(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?
State two differences between the e.m.f. and terminal voltage of a cell.
Tick(✓) the correct choice in the following:
The outer casing of an electric iron is generally connected to earth in order
to
Find the effective resistance in the following circuit diagrams (Fig.):
In the circuit shown in fig. 6, find the reading of the ammeter A when the switch S is
(a) Opened.
(b) Closed.
An electric bulb is marked '100 W, 250 V'. What information does this convey?
State the condition when it is advantageous to connect cells in parallel.
Calculate the current in a wire if a charge of 1500 coulomb flows through it in 5 minutes.
