English
Maharashtra State BoardSSC (English Medium) 10th Standard

The unit of electrical power is _______.

Advertisements
Advertisements

Question

The unit of electrical power is _______.

Options

  • volt

  • watt

  • joule

  • ampere

MCQ
Fill in the Blanks
Advertisements

Solution

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
  Is there an error in this question or solution?
Chapter 4: Effects of electric current - Choose the correct option. [Page 4]

APPEARS IN

SCERT Maharashtra Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
Chapter 4 Effects of electric current
Choose the correct option. | Q 1. | Page 4

RELATED QUESTIONS

Draw circuit symbols for  

an open switch


Draw circuit symbols for 

A closed switch


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.


Explain the construction and working of the following. Draw a neat diagram and label it.

Electric motor


How does the short circuit form? 


Find the odd one out and justify it.
Fuse wire, M.C.B., Rubber Gloves, Generator


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. 

In an electric circuit, electron flow a from of point of ______ potential to the point of ______ potential.


Write the condition required for a circuit to be a closed circuit. 


Name the instrument used to control current in an electric circuit.


What is open circuit?


Right or wrong sentence.

Increasing the current passing through the wire decreases the magnetic field intensity.


Write scientific reason.

It is beneficial to carry electrical energy in AC form as it is carried over long distances.


In the given circuit diagram, which of the given switch(s) should be closed. So that only bulb A glows.


Draw the circuit diagram for the series connection.


Draw the circuit diagram for the following series connection


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


Study the three electric circuits below. Each of them has a glass rod (G), a steel rod (S), and a wooden rod (W).

In which of the electric circuits would the bulb not light up.


State whether true or false. If false, correct the statement.

Ammeter is connected in parallel in any electric circuit.


Explain about domestic electric circuits. (circuit diagram not required)


A device that is used to break an electric circuit is called ______.


Instead of metal wires, a jute string can be used to make a circuit.


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.


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.


Draw the symbols of the following circuit components.

Switch in off position


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


Will the bulb glow in the circuit shown in the following figure? Explain.


Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram.


Write a short note on the different electrical circuits.


Overloading of electric circuits can lead to short-circuiting.


A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases, the electrical resistance of the wire


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.

How is Joule's law effect useful in electric circuits where fuse is used as a safety device?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×