Advertisements
Advertisements
प्रश्न
How will you infer with the help of an experiment that the same current flows through every part of the circuit containing three resistors R1, R2 and R3 in series connected to a battery of V volts?
Advertisements
उत्तर
Consider the given circuit in which a series combination of three resistors of resistances R1, R2 and R3 are shown to be connected to a battery of V volts. An ammeter is also shown to be connected in the circuit. It can be inferred that the current remains the same in the circuit by placing the ammeter at different points in the same circuit i.e. At any point just after R1, R2, and R3. It is observed that the value of the current observed in the ammeter comes to be the same.
APPEARS IN
संबंधित प्रश्न
Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then parallel in a circuit across the same potential difference. The ratio of heat produced in series and parallel combinations would be:
Fill in the following blanks with suitable words:
Copper is a good .......... Plastic is an ..........
What is the general name of the substances having infinitely high electrical resistance?
Distinguish between good conductors, resistors and insulators. Name two good conductors, two resistance and two insulators.
Which among iron and mercury is a better conductor of electricity?
Calculate the resistance of a copper wire 1.0 km long and 0.50 mm diameter if the resistivity of copper is 1.7 × 10−8 Ω m.
How does the resistance of a conductor depend on:
area of cross-section of the conductor?
How does the resistance of a wire change when:
its material is changed to one whose resistivity is three times?
A cylindrical conductor of length l and uniform area of cross-section A has resistance R. Another conductor of length 2l and resistance R of the same material has an area of cross-section:
How will the resistance of a wire be affected if its
- length is doubled, and
- radius is also doubled ?
Give justification for your answer.
