CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

RLC Circuit

If the same a...

Question

If the same arc lamp is to be operated on $160 V$ (dc), what additional resistance in ohms is required?

Open in App

Solution

When operated at 160V dc,
$I_{r m s} = I_{a v e r a g e}$ required is 10A.
Therefore, $R_{t o t a l}$ required is $\frac{160}{10} = 16 Ω$
Therefore, additional resistance required is $R_{t o t a l} - 5 = 11 Ω$

Suggest Corrections

thumbs-up

0

Similar questions

Q. A coil is needed to operate an arc lamp of 150 V, 50 Hz. The lamp of resistance of 5 ohms when running at 10A. Find inductance of the choke coil, if the same arc lamp is to be operated on 160 V, DC. What is the additional resistance required?

Q. A choke coil is needed to operate an arc lamp at

160 V

50 H z

. The arc lamp has an effective resistance of

5 Ω

when running at

10 A

(rms). Calculate the inductance of the choke coil. If the same arc lamp is to be operated on

160 V

DC, what additional resistance would be required. Compare the power losses in both the cases.

Q. A projector lamp can be used at a maximum voltage of 60 V, its resistance is 20, the series resistance (in ohms) required to operate the lamp from a 75 V supply is

Q. A 30V-90W lamp is operated on a 120 V DC line. A resistor is connected in series with the lamp in order to glow it properly. The value of resistance is

A voltmeter connected to the terminals of battery reads

6 V

initially. When the lamp is lighted with the battery, same voltmeter reads

4 V

. If resistance of lamp is 10

Ω

, resistance of battery in Ohms is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Series RLC

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon