Electromagnetic Induction & Alternating Currents (AIIMS Physics): Questions 46 - 50 of 51

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Question number: 46

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 1998

MCQ▾

Question

Two coil have a mutual inductance Equation . The current changes in first coil according to equation Equation , where Equation and Equation . The maximum value of induced emf in second coil is – (AIPMT)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 47

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

Appeared in Year: 2003

MCQ▾

Question

A generator produces a voltage Equation where V is in volts and Equation in second. The frequency and r. m. s voltage are – [RPMT]

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 48

» Electromagnetic Induction & Alternating Currents » Alternating Currents

MCQ▾

Question

Alternating voltage Equation is applied across the resistance Equation . The rms value of current is equal to –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 49

» Electromagnetic Induction & Alternating Currents » Alternating Currents

MCQ▾

Question

An alternative current is given as, Equation . The average value of current over a half – cycle –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 50

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

Appeared in Year: 1987

MCQ▾

Question

In a LCR series circuit, Equation , Equation and Equation the total impedance of the circuit is: [RPET]

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

All of the above

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