A series RCL circuit is at resonance and contains a variable resistor that is set to 206Ω. The power dissipated in the circuit is 1.30 W. Assuming that the voltage remains constant, how much power is dissipated when the variable resistor is set to 532Ω? Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise.

Power dissipated in resistor 532 ohm is 0.503 watt

Explanation:

We have given in first case resistance

Power dissipated in this resistance is

Power dissipated in the resistor is equal to

We have to find the power dissipated in the resistor is 1.30 watt

From the relation we can say that

So power dissipated in resistor 532 ohm is 0.503 watt  

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be