engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Physics Current, Resistance and Electricity Ohm’s Law
The graph of the potential difference V against the current I for a device is as shown below.
Which of the following is the correct deduction?
1
The device obeys Ohm's law.
2
The resistance of the device increases when the current increases.
3
The resistance of the device remains constant when the p.d. increases.
4
The resistance of the device remains constant when the current increases.