Of which physical quantity is the $joule/coulomb$ a unit?
Electric Charge
Electric potential difference
Electric current
Resistance
State the factors on which the resistance of a cylindrical conductor depends, How will resistance of a conductor change if it is stretched so that its length is doubled ?
What is the resistance of an ideal voltmeter ?
The $I-V$ graphs of two resistors, and their series combination, are shown below. Which one of these graphs represents the series combination of the other two? Give reasons for your answer.
An electric bulb is connected to a $220\, V$ generator. The current is $0.50 A$. What is the power of the bulb ?
$100 \,J$ of heat is produced each second in a $4\, \Omega$ resistance. Find the potential difference across the resistor.