At the time of short circuit, the current in the circuit
- reduces substantially.
- does not change.
- increases heavily.
- vary continuously.
The Correct Option is C
Solution and Explanation
When two naked wires of an electric circuit touch each other, the amount of current that is flowing in the circuit increases abruptly. This causes short-circuit.
So, the correct option is (C): increases heavily.
Top Questions on Domestic Electric Circuits
- Use Ohm’s law to determine the potential difference across the 3 \(\Omega\) resistor in the circuit shown in the following diagram when key is closed:
- CBSE Class X - 2024
- Science
- Domestic Electric Circuits
- What is the function of an earth wire? Why is it necessary to earth metallic appliances?
- CBSE Class X
- Science
- Domestic Electric Circuits
- When does an electric short circuit occur?
- CBSE Class X
- Science
- Domestic Electric Circuits
Questions Asked in CBSE X exam
- Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.
How is the brain protected in our body?
- CBSE Class X - 2025
- Brain Structure
- Describe the historical factors that contributed to the emergence of nationalist tensions in the Balkans.
- CBSE Class X - 2025
- The Rise of Nationalism in Europe
आप नव्या / भव्य हैं। विद्यालय में नामांकन के समय आपकी जन्मतिथि गलत दर्ज हो गई है। दसवीं के पंजीकरण से पहले आप इसे सुधरवाना चाहते हैं। जन्मतिथि में सुधार हेतु निवेदन करते हुए प्रधानाचार्य को लगभग 80 शब्दों में एक ई-मेल लिखिए।
- CBSE Class X - 2025
- पत्र लेखन
आप अदिति / आदित्य हैं। आपकी दादीजी को खेलों में अत्यधिक रुचि है। ओलंपिक खेल-2024 में भारत के प्रदर्शन के बारे में जानकारी देते हुए लगभग 100 शब्दों में पत्र लिखिए।
- CBSE Class X - 2025
- पत्र लेखन
Concepts Used:
Magnetic Field
The magnetic field is a field created by moving electric charges. It is a force field that exerts a force on materials such as iron when they are placed in its vicinity. Magnetic fields do not require a medium to propagate; they can even propagate in a vacuum. Magnetic field also referred to as a vector field, describes the magnetic influence on moving electric charges, magnetic materials, and electric currents.
A magnetic field can be presented in two ways.
- Magnetic Field Vector: The magnetic field is described mathematically as a vector field. This vector field can be plotted directly as a set of many vectors drawn on a grid. Each vector points in the direction that a compass would point and has length dependent on the strength of the magnetic force.
- Magnetic Field Lines: An alternative way to represent the information contained within a vector field is with the use of field lines. Here we dispense with the grid pattern and connect the vectors with smooth lines.
Properties of Magnetic Field Lines
- Magnetic field lines never cross each other
- The density of the field lines indicates the strength of the field
- Magnetic field lines always make closed-loops
- Magnetic field lines always emerge or start from the north pole and terminate at the south pole.