Advertisements
Advertisements
प्रश्न
The unit of electrical power is _______.
पर्याय
volt
watt
joule
ampere
Advertisements
उत्तर
The unit of electrical power is watt.
Explanation:
It is defined as 1 joule per second (1 W = 1 J/s). It represents the rate at which electrical energy is consumed or produced.
संबंधित प्रश्न
Draw circuit symbols for variable resistance
Tell the odd one out. Give proper explanation.
Explain the construction and working of the following. Draw a neat diagram and label it.
Electric motor
Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator
Two tungsten bulbs of power 50 W and 60 W work on 220 V potential difference. If they are connected in parallel, how much current will flow in the main conductor?
Resistances R1, R2, R3 and R4 are connected as shown in the figure. S1 and S2 are two keys. Discuss the current flowing in the circuit in the following cases.
- Both S1 and S2 are closed.
- Both S1 and S2 are open.
- S1 is closed but S2 is open.
In an electric circuit, electron flow a from of point of ______ potential to the point of ______ potential.
Answer the following question.
With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance of a group of resistances joined in parallel is equal to the sum of the reciprocals of the individual resistances.
What is the potential difference?
Write scientific reason.
It is beneficial to carry electrical energy in AC form as it is carried over long distances.
What is the use of earthing wire?
Flow of electricity through a closed circuit is _____.
Draw the circuit diagram for the series connection.
In the circuit shown, which switches (L,M or N) must be closed to light up the bulb?
In which of the following circuits are the bulb connected in series?
_____ has a thin metallic filament that melts and breaks the connection when the circuit is overheated.
What is electric circuit?
In a simple circuit, why does the bulb glow when you close the switch?
The wiring in a house consists of ______ circuits.
Explain about domestic electric circuits. (circuit diagram not required)
Assertion: In an open circuit, the current passes from one terminal of the electric cell to another.
Reason: Generally, the metal disc of a cell acts as a positive terminal.
In a circuit, if the key is in open (off) condition, then electricity will not flow.
In the following circuits (Figure), heat produced in the resistor or combination of resistors connected to a 12 V battery will be
 |
 |
 |
| (i) | (ii) | (iii) |
In an electrical circuit three incandescent bulbs A, B and C of rating 40 W, 60 W and 100 W respectively are connected in parallel to an electric source. Which of the following is likely to happen regarding their brightness?
In an electric circuit, the current starts from ______.
Choose the statement which is not correct in the case of an electric fuse.
In an electric circuit a fuse is a ______ ______ to prevent possible fire.
Match the following
| 1. | Insulator | a. | Coulomb |
| 2. | Conductor | b. | Electric circuit |
| 3. | Closed path | c. | Copper |
| 4. | Electric charge | d. | Rubber |
What are the essential components of an electric circuit?
Paheli is running short of connecting wires. To complete an electric circuit, she may use a ______.
Will the bulb glow in the circuit shown in the following figure? Explain.
Overloading of electric circuits can lead to short-circuiting.
Name the device which is used to measure the strength of the electric current in an electric circuit.
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
