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Faraday's Law

What is the r...

Question

What is the relation between the number of turns in the coil and the emf across their ends?

A

\frac{E_{p}}{E_{s}} = \frac{n_{p}}{n_{s}}

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B

\frac{E_{p}}{E_{s}} = \frac{n_{s}}{n_{p}}

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C

E_{p} + E_{s} = n_{p} + n_{s}

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D

E_{p} - E_{s} = n_{p} - n_{s}

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Solution

The correct option is A $\frac{E_{p}}{E_{s}} = \frac{n_{p}}{n_{s}}$
The relation between the number of turns in the coil and the emf across their ends is given by,
$\frac{E_{p}}{E_{s}} = \frac{n_{p}}{n_{s}}$

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Similar questions

E_{p}

E_{s}

are the input and output voltages of a transformer, then:
(where

n_{p}

is the number of turns in primary and

n_{s}

is the number of turns in secondary)

Q. Assertion :A step up transformer can also be used as a step down transformer. Reason: This is because

\frac{E_{p}}{E_{s}} = \frac{n_{s}}{n_{p}}

In a step up transformer :
(a) $N_{s} = N_{p}$ (b) $N_{s} < N_{p}$
(c) $N_{s} > N_{p}$ (d) nothing can be said.

Q. Match the following
a) step up transformer d) turns ratio is 1
b) step down transformer e) Ns > Np
c) Ideal transformer f) Np > Ns

Q. PRINCIPLE: Damage without the violation of a legal right is not actionable in a court of law. If the interference with the rights of another person in not unlawful or unauthorized, but a necessary consequence of the exercise of defendant's own lawful rights, no action should lie.
FACTS: There was an estbalished school ('ES') in a particular locality. Subsequently, a new school ('NS') was set up in the same locality, which charged lower fee on account of which people started patronising the new school. Because of the competition 'ES' had to reduce its fees. 'ES' filed a case against 'NS' saying that 'NS' had caused it ('ES') financial loss and thus, claimed compensation.

Which of the following derivations is CORRECT?

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