List of top Physics Questions on Kirchhoff's Laws asked in MET

An electric kettle has two coils. When one coil is switched on, it takes 10 min to boil water and when the second coil is switched on it takes 20 min to boil same amount of water. The time taken when both coils are used in parallel is \(n\) seconds. Find \(n\).

The resistance of a wire at \(20^\circ C\) is \(20\Omega\) and at \(500^\circ C\) is \(60\Omega\). At which temperature its resistance will be \(25\Omega\)?

A current of 2 A flows in the system of conductors as shown in the figure. The potential difference \(V_P - V_R\) will be :

A wire of resistance \(5\,\Omega\) is drawn out so that its length is increased to twice its original length, its new resistance is:

On a heater coil it is written \(250\,V, 500\,W\). What is the resistance of this coil?

An electric current of \(2\,A\) passes through a wire of resistance \(25\,\Omega\). How much heat will be generated in \(1\,min\)?

A battery of emf 10 V is connected to resistance as shown in figure. The potential difference $VA-VB$ between the points A and B is

The correct set of four quantum numbers for outermost electron of potassium ($Z=19$) is

For the reaction $H_2O (l) \rightleftharpoons H_2O(g)$ at 373 K and 1 atm pressure

A closed mesh has a potential \( V' \), current \( I \), and resistance \( R \). If \( V' = 0.5 \,\text{V} \), \( I = 0.1 \,\text{A} \), and \( R = 20 \,\Omega \), the total voltage \( V \) is:

The resistance of an ideal ammeter is: