English
Maharashtra State BoardSSC (English Medium) 10th Standard

Tara, after completing her exams, went to her grandmother's house along with her younger brother Rahul. One day, Rahul came home after playing and switched on the fan and air conditioner.

Advertisements
Advertisements

Question

Tara, after completing her exams, went to her grandmother's house along with her younger brother Rahul. One day, Rahul came home after playing and switched on the fan and air conditioner. At the same time, his grandmother was preparing a milkshake for him using a mixer. Suddenly, they heard a big sound and the electricity of the house got shut down. Tara is called an electrician. He said the main reason for supply to shut down was overloading.

  1. What is overloading?
  2. Is overloading and short the same? When does short-circuiting take place?
  3. How can the effects of overloading be avoided?
Short/Brief Note
Advertisements

Solution

  1. Overloading is the term used to describe the circuit's current flow when it exceeds the allowed value.
  2. Short-circuiting and overloading are not the same. When a live wire and a neutral wire are in direct contact with one another, a short circuit occurs.
  3. Overloading can be avoided by not connecting too many appliances to the same circuit at the same time.
shaalaa.com
  Is there an error in this question or solution?
2025-2026 (March) Model set 3 by shaalaa.com

RELATED QUESTIONS

When current is switched ‘on’ in a room heater, it ______.


An electric room heater draws a current of 2.4 A from the 120 V supply line. What current will this room heater draw when connected to 240 V supply line?


Explain why, tungsten is used for making the filaments of electric bulbs.


The current passing through an electric kettle has been doubled. The heat produced will become:

(a) half
(b) double
(c) four time
(d) one-fourth 


The elements of electrical heating devices are usually made of:

(a) tungsten
(b) bronze
(c) nichrome
(d) argon


Which electric heating device in your home do you think have resistors which control the flow of electricity?


Statement 1 : Electric current ( flow of electrons ) creates heat in the resistor.
Statement 2 : Heat in the resistor is created according to the rule of energy conservation.
Explain Statement 1 with the help of Statement 2.


Why does tungsten metal used to make solenoid type coil in an electric bulb?


Give scientific reason :
In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster, etc., an alloy such as Nichrome is used, not pure metals.


Answer the following question:
what is the heating effect of the electric current? state any four applications of it?


Compute the heat generated while transferring 96000 coulombs of charge in two hours through a potential difference of 40 V.


Find the odd one out and give its explanation.


What is a short circuit?


What is overloading?


What is used to turn off the sudden increase in current in the electrical circuit of the house nowadays?


Write scientific reason.

A coil made up of alloy Nichrome is used in the electric heater cooker as a resistor.


Explain the application of heating effect of electric current in an electric bulb with a diagram.


True or False – If False give the correct answer

The fuse wire does not melts whenever there is overload in the wiring.


Define fuse.


An electric iron consumes energy at the rate of 420 W when heating is at the maximum rate and 180 W when heating is at the minimum rate. The applied voltage is 220 V. What is the current in each case?


Assertion: Bending of wire decreases the resistance of the electric wire.

Reason: The resistance of a conductor depends on length, thickness, nature of material and temperature of the conductor.


How does use of a fuse wire protect electrical appliances?


Why is parallel arrangement used in domestic wiring?


Unscramble the following words:

SFEU


Can we use the same fuse in a geyser and a television set? Explain.


Match the following

1. Bulb a. Conductor
2. Electroplating b.

Insulator

3. Pure water c.  Heating effect of current
4. Salt solution d. Chemical effect of current

Assertion: A current-carrying wire should be charged.
Reason: The current in a wire is due to the flow of free electrons in a definite direction.


The following is not a safety device.


An electric fuse is a wire made up of a material having ______ melting point.


The electric fuse works on the Joule heating principle.


Find the odd one out.


1 kWh is equal to ______.


Write an expression for the amount of heat produced in a resistor when an electric current is passed through it stating the meanings of the symbols used.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×