Advertisements
Advertisements
प्रश्न
Draw a I–V graph for a linear resistor. What does its slope represent?
उत्तर
One draws an I-V graph of a linear resistor. The slope represents the conductor's resistance, R.
Slope `("V"_"A" - "V"_"B")/("I"_"C" -"I"_"D")`
`(Δ "V")/(Δ "I") = "R"`
Graph for V vs I or slope
`(Δ "I")/(Δ "V") = 1/("Resistance of the conductor")`
APPEARS IN
संबंधित प्रश्न
How does the resistance of a wire depend on its length? Give a reason for your answer.
Exercise.
The values of current (I) flowing through a resistor for various potential differences V across the resistor are given below. What is the value of resistor?
| I (ampere) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
| V (volt) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 |
An electric bulb is rated ‘240 V, 100 W’.
- What information can you get from the above statement?
- What will happen if this bulb is connected across 220 V?
- Calculate the resistance of the bulb.
- Also find the energy consumed by the bulb in 10 minutes.
The resistance of a straight conductor is independent of ______.
What is the maximum resistance one can make with ten 1Ω resistors?
Two conductors of resistance 2 R and R are connected in series in a battery circuit. The ratio of heat developed In them is ______.
The ______ is the measure of opposition offered by the component to the flow of electric current through it.
Match the following:
| Column I | Column II | ||
| 1. | Resistor | a. | Galvanometer |
| 2. | Connecting wire | b. | Voltmeter |
| 3. | Current in an electric circuit | c. | Copper |
| 4. | Potential difference | d. | Constantan |
Define the following:
Fixed resistor
Observe the given circuit diagram and answer the questions that follow:
- Calculate the resistance of the circuit when the key K completes the circuit.
- Calculate the current through 3Ω resistance when the circuit is complete.
