Consider resistors r1 and r2 connected in series e r1 r2 and in parallel e r1 r2 to a source of emf e that has no internal resistance. how does the power dissipated by the resistors in these two cases compare?

The power dissipated by the resistors connected in parallel is higher than that of in series.

Explanation:

Power dissipated by a resistor is given by the following formula:

The current, I, can be found by Ohm's Law:

Case 1:

The equivalent resistance in resistors connected in series is:

Case 2:

The equivalent resistance in resistors connected in parallel is:

Comparison:

If we compare and :

According to these equations, we can conclude that

You can give numbers to resistances to compare them.

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