Physics, asked by akash8647, 7 months ago

A parallel combination of three resistors takes a current of 7.5 A
from a 30 V battery. If two of the resistances are 122 and 100,
find the third one?
A. 55ohm
B. 35ohm
C. 25ohm
D. 15ohm
E. 30ohm

Answers

Answered by purushothamv29

3

Answer:

Question is wrong the two resistors are 12 and 10 ohms. Then the answer is follow

D. 15 ohm

Explanation:

resultant resistance R= v/I = 30/7.5= 4

parallel resultant resistance

1/4= 1/12+1/10+1/r

by solving

we can get r= 15

Previous Question

Next Question

Similar questions

Chemistry, 3 months ago

elaborate the statement " waxes are a diverse class of organic compounds that are lipophilic,malleable solids near ambient temperatures".

English, 3 months ago

conversation between two friends about ambition is to be a win the championship of netball...

English, 3 months ago

Q6. Change the following sentences into passive voice. 4. They asked him his address.

Math, 7 months ago

Arrange the following numbers in suitable groups and determine their sum. 129 , 37 , 113 and 421...

Geography, 7 months ago

describe the vegetation of tropical rain forest...

Biology, 1 year ago

In the sketch of stomatal apparatus given alongside, the parts I, II, III and IV were labelled differently by four students. The correct labelling is shown in (1) (I) guard cells, (II) stoma, (III) starch granule, (IV) nucleus (2) (I) cytoplasm, (II) nucleus, (III) stoma, (IV) chloroplast (3) (I) guard cells, (II) starch, (III) nucleus, (IV) stoma (4) (I) cytoplasm, (II) chloroplast, (III)...

Biology, 1 year ago

While preparing a good temporary mount of leaf peel to observe stomata, care should be taken to avoid (1) adding glycerine to the slide (2) using water to wash the slide (3) having air bubbles in the slide (4) staining the peel with safranin...

Biology, 1 year ago

A student focussed the leaf epidermal peel under the low power of microscope but could not see all the parts. He should (1) use the coarse adjustment knob again to focus the slide. (2) use the fine adjustment knob to increase magnification. (3) focus under high power using coarse adjustment knob. (4) focus under high power using fine adjustment knob.