In Fig. 3.18 If S2 is in 'ON' position, S1 is in 'OFF' position, which lamp(s) will glow? Class 7
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Expert Answer
In Fig. 3.18 If S2 is in 'ON' position, S1 is in 'OFF' position, which lamp(s) will glow Class 7
In Fig. 3.18 Class 7
(i) If S2 is in 'ON' position, S1 is in 'OFF' position, which lamp(s) will glow?
(ii) If S2 is in 'OFF' position, S1, is in 'ON' position, which lamp(s) will glow?
(iii) If S1 and S2 both are in 'ON' position, which lamp(s) will glow?
(iv) If both S1 and S2 are in 'OFF' position, which lamp(s) will glow?
Answer:
(i) If S2 is 'ON', and S1 is 'OFF' : No lamp will glow.
(ii) If S2 is 'OFF', and S1 is 'ON' : No lamp will glow.
(iii) If S1 is ' ON ', and S2 is ' ON ': Both lamps (L1 and L2) will glow.
(iv) If S1 is 'OFF', and S2 is 'OFF': Both lamps (L1 and L2) will not glow.