Advertisements
Advertisements
Question
Give two difference between an ohmic and non-ohmic resistor.
Distinguish Between
Advertisements
Solution
| Ohmic resistor | Non-ohmic resistor | |
| 1. |
V/I remains constant regardless of the value of V or I, as it follows Ohm's law. |
V/I is not constant and does not remain the same for all values of V or I since it does not follow Ohm's law. |
| 2. | A straight line represents the relationship between current I and projected V. | A straight line does not appear on the graph that plots current I against potential difference. |
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
The music system draws a current of 400 mA when connected to a 12 V battery.
- What is the resistance of the music system?
- The music system if left playing for several hours and finally the battery voltage drops and the music system stops playing when the current drops to 320 mA. At what battery voltage does the music system stop playing?
What are non-ohmic reistors? Give one example and draw a graph to show its current-voltage relationship.
The following figure shows the I-V characteristic curves for two resistors. Identify the ohmic and non-ohmic resistors. Give a reason for your answer.
 |
 |
| (a) | (b) |
Write the expressions for the equivalent resistance R of three resistors R1, R2 and R3 joined in
- parallel
- series
