A DC circuit which includes EmTx of unkown magnitude and orientation, at the loc

Question

A DC circuit which includes EmTx of unkown magnitude and orientation, at the location indicated is shown below. Note the 'ground' (V=0) in the circuit. 8 V 2 4 V 3 The potential between 'b' and 'a', Vb-Va, is measured to be 4.00 V. Determine the value and orientation of Em negative: I. The potential difference, Va-Vc, across Emf is: You are correct Your receipt no. is 152-57 II. The magnitude of Emf is: 19.59V Calculate first the current flowing from b to a. Submit Answer Incorrect. Tries 3/99 Previous Tries 111. Calculate the current through the 8 resistor located on the far right. Use + sign for current flowing toward top of page. 31A t Answer Incorrect. Tries 7/99 Previous Tries I. Calculate the power dissipated in the 8 resistor located on the far right. 1.37×101 w ou are correct Your receipt no. is 152-678

Explanation / Answer

1_. Va - Vb = - 21.62 Volt

II_ Magnitude of EMFx = 21.62 Volt

III_ + 1.308 Ampere

IV_ 13.7 Watt

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