If a student while studying the dependence of current on the potential difference keeps the circuit closed for a long time to measure the current and potential difference, then
A. ammeter’s zero error will change
B. ammeter will give more reading
C. voltmeter will show constantly higher readings
D. resistor will get heated up and its value will change
Answer:D
If a student while studying the dependence of current on the potential difference keeps the circuit closed for a long time to measure the current and potential difference, then
A. ammeter’s zero error will change B. ammeter will give more reading C. voltmeter will show constantly higher readings D. resistor will get heated up and its value will change