3 years ago

If bc=7 and b lies at -4 where could c be located 60POINTS!!!!! there is 2 answers

Mathematics

1 answer:

sveticcg [70]3 years ago

7 0

Answer:

11 (i think.. 80% sure)

Step-by-step explanation:

b=-4

-4*c=7

add 4 to 7

c=11

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4 years ago

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Step-by-step explanation:

Given voltage of primary coil is $V_p=12V$

And voltage of secondary coil is $V_s=12,000V$

A transformer is a device that contains primary and secondary coil. These coils are mounted on soft iron. The change in voltage depends upon the number of turns of primary coil $(n_p)$ and secondary coil $(n_s)$ .

Following equation represents the relation between them.

$\frac{V_s}{V_p} =\frac{n_s}{n_p}\\\\\frac{12,000}{12}=\frac{n_s}{n_p}\\\\1000=\frac{n_s}{n_p}$

Then, ratio of the number of wire turns on the primary coil to the number of turns on the secondary coil is

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