Home
Class 12
PHYSICS
A bulb is connected first with DC and th...

A bulb is connected first with `DC` and the then `AC` of same voltage then it will shine brightly with

A

AC

B

DC

C

brightness will be in ratio `(1)/(1.4)`

D

equally with both

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion : An electric bulb is first connected to a dc source and then to a ac source having the same brightness in both the cases. Reason : The peak value of voltage for an A.C. source is sqrt(2) times the root mean square voltage.

A coil and a bulb are connected in series with a dc source, a soft iron core is then inserted in the coil. Then

Assertion: If an inductor coil is connected to DC source, the current supplied by it is I_(1) . If the same coil is connected with an AC source of same voltage. Then current is I_(2) , then I_(2) lt I_(1) . Reason: In AC circuit, inductor coil offers more resistance.

Two 220 V,100 W bulbs are connected first in series and then in parallel. Each time the combination is connected to a 220 V AC supply line. The power drawn by the combination in each case respectively will be :

An air core coil and an electric bulb are connected in series with an AC source. If an iron rod is put in the coil, then the intensity of light of the bulb will

A coil a capacitor and an AC source of rms voltage 24 V are connected in series. By varying the frequency of the source, a maximum rms current of 6 A is observed. If coil is connected is at DC batteryof emf 12 volt and internal resistance 4Omega , then current through it in steady state is

A coil a capacitor and an AC source of rms voltage 24 V are connected in series. By varying the frequency of the source, a maximum rms current of 6 A is observed. If coil is connected is at DC batteryof emf 12 volt and internal resistance 4Omega , then current through it in steady state is

A coil a capacitor and an AC source of rms voltage 24 V are connected in series. By varying the frequency of the source, a maximum rms current of 6 A is observed. If coil is connected is at DC batteryof emf 12 volt and internal resistance 4Omega , then current through it in steady state is

An electric bulb rated '220 V, 60 W' glows when connected with 220 V mains. Another identical bulb is connected in series with the first one and the system is connected across the 220 V mains. Draw a diagram to show the arrangement and find : (a) the rate of consumption of energy in each bulb, and (ii) total power consumed.

Figure shows three idenetical bulbs A,B and C connected to a battery of supply voltage V. When the switch S is closed, discuss the change is . (a) The illumination of the three bulbs (b) The power dissipated in the circuit .