A lamp L is connected to an ac source along with an air core inductor as shown in the Figure. How is the brilliance of the lamp affected if core made of following material is inserted inside the inductor? (a) Iron (b) Copper (c) Iron sheets pasted together with insulation in between [laminated Iron core] In which case the lamp will be least bright?

An air coil solenoid is connected to an a.c. sources and a bulb. If an iron core is insernted in the solenoid, how does the brightness of the bulb change? Give reason for your answer.

A light bulb and an open coil inductor are connected to an ac source through a key as shown in Fig. The switch is closed and after sometime, an iron rod is inserted inot the interior of the inductor. The glow of the ligth bulb (a) increases (b) decreases (c) is unchanged as the iron is inserted. Give your answer with reasosns. What will be your answer if ac source is replaced by dc source ?

A light bulb and an open coil inductor are connected to an ac source through a key as shown in Fig. The switch is closed and after sometime, an iron rod is inserted inot the interior of the inductor. The glow of the ligth bulb (a) increases (b) decreases (c) is unchanged as the iron is inserted. Give your answer with reasosns. What will be your answer if ac source is replaced by dc source ?

In figure, a lamp P is in series with an iron-core inductor L. When the switch S is closed, the brightness of the lamp rises relatively slowly to its full brightness than it would do without the inductor. This is due to

A light bulb and an open coil inductor are connected to an ac source through a key as shown in the figure. The switch is closed and after sometime, an iron rod is inserted into interior of the inductor. The glow of the light bulb (a) increases , (b) decreases , (c ) is unchanged, as the iron rod is inserted. Given your answer with reasons.

An iron cored coil is connected in series with an electric bulb, with an AC source, as shoen in figure. As the iron piece is taken out of the coil, how will tthe brightness of bulb challenge ?

An iron cored coil is connected in series with an electric bulb, with an AC source, as shoen in figure. As the iron piece is taken out of the coil, how will tthe brightness of bulb challenge ?

An inductor L of inductance X_L is connected in series with a bulb B and an source. How would brightness of the bulb change when the number of turns of the inductor is reduced an iron rod is inserted in the inductor and a capacitor of reactance X_C=X_L is inserted in series in the circuit. Justify your answer in each case.

A light bulb and an open coil inductor are connected to an ac source through a key as shown in figure. The switch is closed and after sometime, an iron rod is inserted into the interior of the inductor. The glow of the light bulb (a) increases, (b) decreases, (c) is unchanged, as the iron rod is inserted. Give your answer with reasons.