Current Electri...

A wire has resistance of $$\displaystyle 12\Omega $$. It is cut into two parts and both halve are connected in parallel. The new resistance is

Two metallic wires of $$\displaystyle 6\Omega $$ and $$\displaystyle 3\Omega $$ are in connection. What will be the mode of connection so that to get effective resistance of $$\displaystyle 2\Omega $$ ?

Two resistors are connected a) in series b) in parallel.
The equivalent resistance in two cases are $$9\Omega$$ and $$2\Omega$$ respectively. Then the resistance of the component resistors are.

A wire of resistance $$12\ ohm$$ per meter is bent to form a complete circle of radius $$10\ cm$$. The resistance b/w its two diametrically opposite points $$A$$ and $$B$$ as shown in the figure is

For three resistors connected in series.

An electricity bulb of 100 watt is connected to  supply of electricity of 220V. Resistance of filament is

When two resistances $$\displaystyle { R }_{ 1 }$$ and $$\displaystyle { R }_{ 2 }$$ are connected in series, they consume 12W power. When they are connected in parallel, they consume 50W power. What is the ratio of the powers of $$\displaystyle { R }_{ 1 }$$ and $$\displaystyle { R }_{ 2 }$$

In the circuit, $$\displaystyle 5\Omega $$ resistor develops 45J/s due to current flowing through it. The power developed per second across $$\displaystyle 12\Omega $$ resistor is:

If $$\displaystyle { R }_{ 1 }$$ and $$\displaystyle { R }_{ 2 }$$ are respectively the filament resistance of a $$200 \ W$$ bulb and $$100 \ W$$ bulb designed to operate on the same voltage then

Three resistors each having the same resistance are connected in parallel. Their equivalent resistance is $$\displaystyle 5\ \Omega $$. If they are connected in series, their equivalent resistance is.