In Figure, what is the power dissipated in the 2 ? resistance in the circuit if

Question

In Figure, what is the power dissipated in the 2 ? resistance in the circuit if the voltage on the battery is 41.8 V? Express the answer with two decimal places.

In the circuit shown in Figure, the resistances are R1 = 23 Ohms, R2 = 50 Oms, R3 = 70 Ohms. An ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. What will be the reading of the ohmmeter (with one decimal place)?

In Figure, the current of the circuit in the 8 ? resistor is 1.63 A. What is the current in the 2 ? resistor? Express the answer with two decimal places.

PLEASE HELP WITH THE 3 QUESTIONS & SHOW WORK. THANK YOU :)

In Figure, what is the power dissipated in the 2 ? resistance in the circuit if the voltage on the battery is 41.8 V? Express the answer with two decimal places.

In the circuit shown in Figure, the resistances are R1 = 23 Ohms, R2 = 50 Oms, R3 = 70 Ohms. An ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. What will be the reading of the ohmmeter (with one decimal place)?

In Figure, the current of the circuit in the 8 ? resistor is 1.63 A. What is the current in the 2 ? resistor? Express the answer with two decimal places.

PLEASE HELP WITH THE 3 QUESTIONS & SHOW WORK. THANK YOU :)

Explanation / Answer

apply power P across resista = nce element P = v^2/R

where V is volatge = 41.8 V

and

R is resistance = 2 ohms

so power P = 41.8*41.8/2)

P = 873.62 watts ---------<<<<<<<<<<<<,answer

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