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Series Circuits

Q1:

Which of the following series combinations dissipates the most power when connected across a 120 V source?

A one 220  resistor

B two 220  resistors

C three 220  resistors

D four 220  resistors

ANS:A - one 220  resistor

See.

When any resistor connected in series combination, then. Power is directly proportional to Current (I). So, A/q to find current _we have voltage and resistance.

Therefore, P=[I]2 (square)R. So, when we find the value of current, we will see that (a) option have a maximum value.



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