8A 0 www 2A 3S 365 Ris 403V 402 40A RE% 41 42 B Fig. 1.65 Fig. 1.66 Fig. 1.67 5. Compute the values of battery current I and voltage drop across 6 k2 resistor of Fig. 1.64 when switch S is (a) closed and (b) open. All resistance values are in kilo-ohm. [(a) 3mA; 6 V; (b) 2.25 mA; 0V] [(1) 20 V; (ii) 5 A; (iii)-5 A] 7. 6. For the parallel circuit of Fig. 1.65 calculate (i) V (ii) I, (iii) L. Find the voltage across terminals A and B of the circuit shown in Fig. 1.66. All conductances are in siemens (S). [5 V] 8. Prove that the output voltage V, in the circuit of Fig. 1.67 is V/13. ww 25 4S R Fig. 1.64 R RS AL

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Question no. 8
2A
V2
0.6A
V2100
38
0.2A
ЗА
12 V
6 V
(a)
(b)
(c)
Fig. 1.61
3. An ohmeter is used for measuring the resistance of a circuit between its two terminals. What would be
the reading of such an instrument used for the circuit of Fig. 1.62 at point (a) AB (b) AC and (c) BC?
All resistances are in ohm.
[(a) 25 Q (b) 24 (c) 90
4. Find the current and power supplied by the battery to the circuit of Fig. 1.63 (1) under normal condi-
tions and (i) when a 'short occurs across terminals A and B. All resistances are in kilo-ohm.
(6) 2 mA; 24 m W; () 34 mA; 36 mW]
50
4k 2
A
6k 2
www
I 1k2
ww
6k 2
15
30
14
4 12 VA 3k 2
9V
3k2
25
ww
10
C
Fig. 1.62
Fig. 1.63
Fig. 1.64
3\
ww
2S
423V 403
24)
40A
4S
8A
REK
41
B.
Fig. 1.65
Fig. 1.66
Fig. 1.67
5. Compute the values of battery current I and voltage drop across 6 kQ resistor of Fig. 1.64 when
switch S is (a) closed and (b) open. All resistance values are in kilo-ohm.
[(a) 3mA; 6 V; (b) 2.25 mA; 0V
[) 20 V; () 5 A; ()-5 A]
7. Find the voltage across terminals A and B of the circuit shown in Fig. 1.66. All conductances are in
[5 V]
6. For the parallel circuit of Fig. 1.65 calculate (i) V (ii) I, (iii) I,.
siemens (S).
8. Prove that the output voltage V in the circuit of Fig. 1.67 is V/13.
9. A fault has occurred in the circuit of Fig. 1.68. One resistor has burnt out and has become an open.
Which is the resistor if current supplied by the battery is 6 A ? All resistances are in ohm.
10. In Fig. 1.69 if resistance between terminals A and B measures 1000 2, which resistor is open-
circuited. All conductance values are in milli-siemens (mS).
[40]
[0.8 mS]
Transcribed Image Text:2A V2 0.6A V2100 38 0.2A ЗА 12 V 6 V (a) (b) (c) Fig. 1.61 3. An ohmeter is used for measuring the resistance of a circuit between its two terminals. What would be the reading of such an instrument used for the circuit of Fig. 1.62 at point (a) AB (b) AC and (c) BC? All resistances are in ohm. [(a) 25 Q (b) 24 (c) 90 4. Find the current and power supplied by the battery to the circuit of Fig. 1.63 (1) under normal condi- tions and (i) when a 'short occurs across terminals A and B. All resistances are in kilo-ohm. (6) 2 mA; 24 m W; () 34 mA; 36 mW] 50 4k 2 A 6k 2 www I 1k2 ww 6k 2 15 30 14 4 12 VA 3k 2 9V 3k2 25 ww 10 C Fig. 1.62 Fig. 1.63 Fig. 1.64 3\ ww 2S 423V 403 24) 40A 4S 8A REK 41 B. Fig. 1.65 Fig. 1.66 Fig. 1.67 5. Compute the values of battery current I and voltage drop across 6 kQ resistor of Fig. 1.64 when switch S is (a) closed and (b) open. All resistance values are in kilo-ohm. [(a) 3mA; 6 V; (b) 2.25 mA; 0V [) 20 V; () 5 A; ()-5 A] 7. Find the voltage across terminals A and B of the circuit shown in Fig. 1.66. All conductances are in [5 V] 6. For the parallel circuit of Fig. 1.65 calculate (i) V (ii) I, (iii) I,. siemens (S). 8. Prove that the output voltage V in the circuit of Fig. 1.67 is V/13. 9. A fault has occurred in the circuit of Fig. 1.68. One resistor has burnt out and has become an open. Which is the resistor if current supplied by the battery is 6 A ? All resistances are in ohm. 10. In Fig. 1.69 if resistance between terminals A and B measures 1000 2, which resistor is open- circuited. All conductance values are in milli-siemens (mS). [40] [0.8 mS]
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