= 4. The circuit in Fig. 8 consists a DC power supply with V, 9V, an ammeter A, a voltmeter V. a lamp (L) of resistance

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4 The Circuit In Fig 8 Consists A Dc Power Supply With V 9v An Ammeter A A Voltmeter V A Lamp L Of Resistance 1 (48.33 KiB) Viewed 62 times

= 4. The circuit in Fig. 8 consists a DC power supply with V, 9V, an ammeter A, a voltmeter V. a lamp (L) of resistance R,, two resistors R, and R, along with two switches S, and S.. S₂ 1². R₂ S₁ R₁ = 65 ww V Switch setting (a): (S, open, S, open) Lamp Figure 8 Circuit diagram for question #4. There are 4 switch settings for S, and S, which affect the connections of the two resistors R and R, in the circuit of Fig. 8. FV₁ =9V (a) (S, open, S, open) (b) (S, open, S, closed) (c) (S, closed, S, closed) (d) (S, closed, S, open) At setting (a) the ammeter reading is 1,-0.5 A and voltmeter reading is V₁ = 3 V. From these given data to find the resistance of R₁ = 22, R₂ = 52 Switch setting (b): (S, open, S, closed) Switch setting (c): (S, closed, S, closed) Switch setting (d): (S, closed, S, open) Work to be done: (1) Draw circuit diagram for each of above 4 switch settings. (2) From each diagram to calculate the quantities listed in Table 7. Where V, I, and P, are the voltage, current and power for the lamp: I, & P, are the current and power for the source. (3) Compare the lamp brightness based on the values of P, (W) (power dissipated in the lamp). Table 7 Calculated VI, PI, P, and comparison of brightness of the lamp at 4 switch settings. Switch setting VV) 1 (A) P, (W) 1, (A) P, (W) Lamp brightness