A R E2 A The Figure Shows An Electric Circuit Where The Box A Is A Black Box I E It Contains Certain Devices In The 1 (89.88 KiB) Viewed 34 times
can you solve this question and explain how did you solve it?
a & R E2 A The figure shows an electric circuit where the box A is a black box (i.e., it contains certain devices in them, but either you don't know or you don't care what it contains). The two emf devices give energy to the circuit with powers P, and P2, while the black box uses energy with power PA- Data: I= 5.0 A, P = 21 W, P2 = 94 W, PA = 40 W (a) What is the potential drop Vat on the resistor? Vab V (b) What is the resistance R of the resistor? R = Ω Check
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