# Electromagnetic Induction & Alternating Currents (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 5 - 6 of 11

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## Question number: 5

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 2011

MCQ▾

### Question

In the circuit shown, the switch is closed at time t = 0.

Which of the graphs shown below best represents the voltage across the inductor, as seen on an oscilloscope?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 6

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

Appeared in Year: 2013

MCQ▾

### Question

A black box (BB) which may contain a combination of electrical circuit elements (resistor, capacitor or inductor) is connected with other external circuit elements as shown below in the figure (a). After the switch (S) is closed at time t = 0, the current (I) as a function of time (t) is shown in the figure (b).

(b) In figure current as a function of time is shown.

From this we can infer that the black box contains –

### Choices

Choice (4) Response

a.

A resistor and a capacitor in series

b.

A resistor and an inductor in series

c.

A resistor and an inductor in parallel

d.

A resistor and a capacitor in parallel

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