Ohms Law| Electricity #2 |Class 10 Science

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Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Resistance of an object is a measure of its opposition to the flow of electric current. It depends on the nature of its material and certain external factors. In this video, we will cover:
1. Ohm’s law
2. What is Resistance?
3. Low and High Resistance
4. Factors on which Resistance depends?
5. Limitations of Ohm’s law
6. A copper wire has a diameter of 0.5mm and a resistivity of 1.6×10−6 ohm cm. How much of this wire would be required to make a 10 ohm coil? How much does the resistance change if the diameter is doubled?
7. When a 12V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.
8. NCERT solutions based on ohm’s law
9. NCERT solutions on electricity chapter

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