Would the bulb glow in the circuit shown in fig.?

Will the bulb glow in the circuit shown in Fig. 12.6? Explain.

In the circuit shown in Fig. 7.45,

Observing that the bulb does not glow in the circuit shown in Fig. 14.11 A, Boojho changed the circuit as shown in Fig 14.11 B. He observed deflection in the magnetic compass. (i) What does the deflection in magnetic compass indicate? (ii) Why did the bulb not glow in Fig.14.11 A? (iii) What would be the effect of increase in the number of turns in the coil wound around the magnetic compass in Fig. 14.11B? (iv) What will be observed if the number of cells are increased in the circuit shown in Fig. 14.11B?

Would the bulb glow after completing the circuit shown in Fig. 12.14 if instead of safety pin we use an eraser?

Explain why the bulb would not glow in the arrangement shown in Fig. 12.13.

Paheli connected two bulbs to a cell as shown in Fig. 12.8. She found that filament of bulb B is broken. Will the bulb A glow in this circuit? Give reason.