(1) postive in +x (2) postive in -x (3) postive in +y (4) postive in -y (5) nega

Question

(1) postive in +x (2) postive in -x (3) postive in +y (4) postive in -y (5) negative in +x (6) negative in -x (7) negative in +y (8) negative in -y

I only have one more attempt so please please help

Bapplied L. Votmeter Measuring properties of some material An experiment was carried out to determine the electrical properties of a new conducting material. A bar was made out of the material, L20 cm long with a rectangular cross section h-5 cm high and w- 0.6 cm deep. The bar was part of a circuit and carried a steady current (the diagram shows only part of the circuit). A uniform magnetic field of 1.8 tesla was applied perpendicular to the bar, coming out of the page (using some coils that are not shown). Two voltmeters were connected along and across the bar as shown. The eading on Volt meter 1 s V1 +0.45 volt. The eating on Voltmeter 2 s v2 +0.000 7 volt. The connections across he bar for itme er were carefully placed directly across from each other to eliminate false readings corresponding to the much larger voltage along the bar. There is only one kind of mobile charge in this material. +0.45·1.8 Remember that a voltmeter gives a positive reading if the positive lead is connected to a higher potential location than the negative lead (a) What is the sign of the mobile charges, and which way do they move? Positive mobile charges moving in the-x direction : X

Explanation / Answer

Both the voltmeters gives the positive reading

Hence direction of current in the block from red end to the black wire end

(2) positive in -x

Explanation: positive charge move in the direction of current

(3) positive in +y

Explanation: positive charge move in the direction of current

(5) negative in +x

Explanation: negative charge move opposite direction of the current

(8)negative in -y

Explanation: negative charge move in the opposite direction of the current

Remaining all 1,4,6&7 options are incorrect

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