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Q.3 What does figure 5 and figure 6 represent in page 10 in your laboratory manual?
10 The power source is usually a couple of terminals on the lab table. G represents the galvan The/VVV symbols stand for the resistors in the voltage divider. If there are actually 10 resistors of equal magnitude on your terminal board, as shown in Figure 4, then the voltage across each resistor will be 1/10 of the power supply voltage. You can measure the actual voltage across a resistor by connecting a voltmeter directly across the resistor as shown in Figure 5. Measure the voltage between each terminal marked 1, 2, 3, .. and the terminal marked V 0 and record these data. You should find approximately V1 0.6 volts, V2-1.2 volts, etc., assuming a 6 volt power source. We will arbitrarily set the potential of the negative terminal equal to zero. ometer. TER Fig.5 With the pencil probe connected to terminal 1 as shown, no current will flow through the galvanometer G if the probe is touched to a point on the conduction paper which is at the potential V1 0.6 volts. Trace out these points and obtain the equipotential curve V-V. Now connect the galvanometer to terminal 2 and obtain the equipotential curve V- V2. Continue in this manner for the remaining terminals. b) Field Lines: You will find a second pencil probe attached to a compass. Connect the galvanometer to it as shown in Fig. 6. Otherwise, leave the equipment connected as in Fig. 4. With the two points of the probe separated by an appropriate distance d (try d 1 cm), touch them to e paper. If both points are on an equipotential, no deflection of the galvanometer occurs. Verify as accurately as you can that the direction of maximum deflection is perpendicular to the equipotentials you have drawn. Having verified this, sketch in free- hand three field lines joining the two terminals. The direction of maximum deflection results when the two points of the probe are exactly on a field line. Fig. 6 c) Field Strength:
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Answer #1

Figure 5 is representing Voltmeter connection while figure 6 is representing Galvanometer connection in a part of a circuit.

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