Electricity Tes...

1 kWh is equal to

A circular conductor is made of a uniform wire of resistance 2 x $$10^{-3}$$ ohm/metre and the diameter of this circular conductor is 2 metres. Then the resistance measured between the ends of the diameter is (in ohms)

If the filament of bulb D breaks then does bulb C give more light, less light, the same light or no light?

Do the arrows in the diagram indicate the direction of electron flow or conventional flow of electricity?

An electric lamp whose resistance of 10 ohm, and a conductor of 2 ohm resistance are connected in series with a 6 V battery. The total current through the circuit and the potential difference across the electric lamp are :

In the network shown, each resistance is equal to R. The equivalent
resistance between diagonally opposite corners is:

The equivalent resistance of eight equal resistances in series is $$48$$ ohms. What would be the equivalent resistance if they are connected in parallel?

Arrange the order of power dissipated in the given circuits, if the same current enters at point $$A$$ in all the circuits and resistance of each resistor is $$R$$.

When current is passed through a conductor, the heat produced in it depends upon
I. The material of the conductor
II. The current flowing through the conductor.
III. The time for which the current flows.

Two heater coils separately take $$10$$ minute and $$5$$ minute to boil certain amount of water. If both the coils are connected in series, the time taken will be