Last Updated On 16-03-2023 - By Jeesha Sara
Two equal resistances when connected in series to a battery, consume electric power of 60 W. If these resistances are now connected in parallel combination to the same battery, the electric power consumed will be :
(a)
60 W
(b)
240 W
(c)
30 W
(d)
120 W
Two equal resistances when connected in series to a battery, consume electric power of 60 W. If these resistances are now connected in parallel combination to the same battery, the electric power consumed will be :
(a)
60 W
(b)
240 W
(c)
30 W
(d)
120 W
Question ID - 50314 :-
Two equal resistances when connected in series to a battery, consume electric power of 60 W. If these resistances are now connected in parallel combination to the same battery, the electric power consumed will be :
(a)
60 W
(b)
240 W
(c)
30 W
(d)
120 W
|
Two equal resistances when connected in series to a battery, consume electric power of 60 W. If these resistances are now connected in parallel combination to the same battery, the electric power consumed will be : |
|||
|
(a) |
60 W |
(b) |
240 W |
|
(c) |
30 W |
(d) |
120 W |
In series condition, equivalent resistance is 2R
Thus power consumed is 60W=
In parallel condition, equivalent resistance is R/ 2 thus new power is
P’=
Or P’= 4p = 240 W
Next Question :
|
An object is at a distance of 20m from a convex lens of focal length 0.3 m. The lens forms an image of the object. If the object moves away from the lens at a speed of 5 m/s, the speed and direction of the image will be : |
|||
|
(a) |
0.92×10−3 m/s away from the lens |
(b) |
2.26×10−3 m/s away from the lens |
|
(c) |
1.16×10−3 m/s towards the lens |
(d) |
3.22×10−3 m/s towards the lens |
View Topper Answer
We hope we have given the updated helpful answer / content for your query in an easily accessible format to help you in preparing adequately. We do offer free support materials, 10th maths guide, 10th science guide, 10th tamil guide, 10th social guide, 10th english guide, science 10th guide and also for all the classes books and guide to all the students who sign up for SaraNextGen. Apart from traditional textbook queries, we've got conjointly provided further high order level thinking issues, that are seemingly to be expected in boards and competitive exams. It includes conceptual queries, MCQs, Long and short answer type queries, etc. These Questions are designed to learn each student and academics by providing chapter-wise further issues focusing totally on testing conceptual information with applications. Here, we've got provided a number of the necessary ways in which within which the solutions of all the Questions will profit students of class 1 to 12. If you have any queries, drop a message to us and we will get back to you at the earliest.
