हिंदी

The unit of electrical power is _______.

Advertisements
Advertisements

प्रश्न

The unit of electrical power is _______.

विकल्प

  • volt

  • watt

  • joule

  • ampere

MCQ
रिक्त स्थान भरें
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.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 4: Effects of electric current - Choose the correct option.

संबंधित प्रश्न

What do the following symbols mean in circuit diagrams?  


What do the following symbols mean in circuit diagrams? 


Draw circuit symbols for  

 a battery of three cells 


Draw circuit symbols for  

an open switch


What is a circuit diagram


Explain with the help of a labelled circuit diagram how you will find the resistance of a combination of three resistors, or resistance R1, R2 and R3, joined in parallel. Also mention how you will connect the ammeter and the voltmeter in the circuit when measuring the current in the circuit and the potential difference across one of the three resistors of the combination.


Tell the odd one out. Give proper explanation.


Who will spend more electrical energy? 500 W TV Set in 30 mins, or 600 W heater in 20 mins?


The following figure shows the symbols for components used in the accompanying electrical circuit. Place them at proper places and complete the circuit.

Which law can you prove with the help of above circuit?


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.

  1. Both S1 and S2 are closed. 
  2. Both S1 and S2 are open.
  3. S1 is closed but S2 is open. 

Distinguish between a closed circuit and an open circuit, with the use of suitable labelled diagrams. 


Match the column ‘A’ with column ‘B’.

Column ‘A’
Column ‘B’
(1) Eka - boron
(a) Germanium
(2) Eka - Aluminium
(b) Scandium
(3) Eka - Silicon
(c) Gallium

Draw a neat diagram showing a open electric circuit.


What is open circuit?


Flow of electricity through a closed circuit is _____.


______ is the device used to close or open an electric circuit.


Tabulate the different components of an electric circuit and their respective symbols.


In the circuit diagram below, 10 units of electric charge move past point x every second What is the current in the circuit ______.


Study the electric circuit below. Which of the following switches should be closed so that only two bulbs will light up


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.


The rate of flow of electric charges in a circuit is called ______.


What are the types of electric circuits?


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?


A child has drawn the electric circuit to study Ohm’s law as shown in Figure. His teacher told that the circuit diagram needs correction. Study the circuit diagram and redraw it after making all corrections.


When an electric current flows through a copper wire AB as shown in the following figure, the wire


Choose the statement which is not correct in the case of an electric fuse.


Three bulbs A, B, C are connected in a circuit as shown in the following figure. When the switch is ‘ON’


Observe the circuit given:

1. Would any of the bulbs glow when the switch is in the ‘OFF’ position?

2. What will be the order in which the bulbs A, B, and C will glow when the switch is moved to the ‘ON’ position?


In the following arrangement shown in the following figure, the bulb will not glow if the ends A and B are connected with


Paheli is running short of connecting wires. To complete an electric circuit, she may use a ______.


Paheli connected two bulbs to a cell as shown in the following figure.


She found that filament of bulb B is broken. Will the bulb A glow in this circuit? Give reason.


Name the device which is used to measure the strength of the electric current in an electric circuit.


An electric motor rated 1100 W is connected to 220 V mains. Find: 

  1. The current drawn from the mains,
  2. Electric energy consumed if the motor is used for 5 hours daily for 6 days.
  3. Total cost of energy consumed if the rate of one unit is 5.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×