9 JEE Main 2012 Current Electricity previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2012 previous-year questions from the Current Electricity chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Current Electricity chapter hub.
Three resistors of 4 Ω, 6 Ω and 12 Ω are connected in parallel and the combination is connected in series with a 1.5 ~V…
Two electric bulbs marked 25 ~W-220 ~V and 100 ~W-220 ~V are connected in series to a 440 ~V supply. Which of the bulbs…
In an experiment of potentiometer for measuring the internal resistance of primary cell a balancing length ℓ is obtaine…
It is preferable to measure the e.m.f. of a cell by potentiometer than by a voltmeter because of the following possible…
In a sensitive meter bridge apparatus the bridge wire should possess
This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best…
A generator has armature resistance of 0.1 Ω and develops an induced emf of 120 ~V when driven at its rated speed. Its…
The resistance of a wire is R. It is bent at the middle by 180ⁱrc and both the ends are twisted together to make a shor…
A 6.0 volt battery is connected to two light bulbs as shown in figure. Light bulb 1 has resistance 3 ohm while light bu…