Question
Let the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?
✓
Answer
It is given that resistance R of the electrical component remains constant but the potential difference across the ends of the component decreases to half of its value. Hence, as per Ohm’s law, new current also decreases to half of its original value.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
State the law of conservation of mass.
Why do green grass plants spring up in dry fields on their own after the rains?
List four causes of damage to forests.
Explain with the help of a diagram, why the concave lens is also called a diverging lens.
Magnetic field lines are shown in the given diagram. A student makes a statement that magnetic field at X is stronger than at Y. Justify this statement. Also redraw the diagram and mark the direction of magnetic field lines.
How are the less reactive metals (which are quite low in the reactivity series) extracted?
Explain with the help of an example.
Explain with the help of an example.
What is meant by ‘heteroatom’? Give examples. Write the names and formulae of two organic compounds containing different heteroatoms.
Give a method for the disposal of household wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants.
The diagram below shows a circuit containing a lamp L, a voltmeter and an ammeter. The voltmeter reading is 3V and the ammeter reading is 0.5A
- What is the resistance of the lamp?
- What is the power of the lamp?
Explain the given reaction with the example:Substitution reaction.