Current Electri...

A current is flowing in a circuit consisting of a resistor and a battery.
What happens to the power dissipated in the resistor when the resistance is quadrupled and the voltage remains constant?

Calculate the unknown resistance R of the circuit as shown in figure, all resistance are connected in the series. The current is flowing through circuit is 2A and battery is of 20 voltage.

Three resistors ($$2, 5$$ and $$7$$ ohm) are wires as shown in the diagram. The equivalent resistance of this combination (in ohm) is:

This question relates to the DC circuit shown below.
The values for current, voltage, and resistance in the circuit are graphed from point A through point G in the graphs directly below.
Which of the graphs shows the resistance from point A to point G?

All resistors in the circuit have the same resistance, $$R$$, and the battery is having a constant voltage of $$V$$.
Find out power dissipated by resistor $$f$$. Given that  the power dissipated by resistor $$e$$ is $$P$$:

Three resistors $$R_1, R_2$$, and $$R_3$$ are connected as shown below.
The resistance of $$R_3$$ is $$1 \Omega$$ and it is known that the value of $$R_3$$ is smaller than the values of $$R_1$$ or $$R_2$$. The resistances of $$R_1$$ and $$R_2$$ are unknown.
Select the best statement describing the equivalent resistance of this combination:

If four resistances, each of value $$1\ ohm$$, are connected in series, what will be the resultant resistance?

Two resistance are connected in series as shown in diagram. What is the current through the $$5\ ohm$$ resistance?

Two resistance are connected in series as shown in diagram. What is the value of $$R$$?

The resistance of the bulb filament is $$100\Omega$$ at a temperature of $$100^{\circ}C$$. If its temperature co-efficient of resistance be $$0.005$$ per $$^{\circ}C$$, its resistance will become $$200\Omega$$ at a temperature