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
State the factors on which the strength of electric current flowing in a given conductor depends.
Draw a circuit diagram showing two lamps, one cell and a switch connected in series.
How can you change the brightness of the lamp?
State the relation between work, charge and potential difference for an electric circuit.
The following table shows the current in Amperes and potential differences in Volts.
- Find the average resistance.
- What will be the nature of the graph between the current and potential difference? (Do not draw a graph.)
- Which law will the graph prove? Explain the law.
| V (volts) | I (amp) |
| 4 | 9 |
| 5 | 11.25 |
| 6 | 13.5 |
Define the following:
Semiconductors
Define the following:
Super conductors
Find the effective resistance in the following circuit diagrams (Fig.):
Complete the following:
1 kWh = _________ J
When an electric current is passed, electrons move from:
A charge of 400C flows through a conductor for 13 minutes and 20 seconds. Find the magnitude of the current flowing through the conductor.
