Current Electricity (KVPY Stream-SA (Class 11) Physics): Questions 1 - 3 of 25

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Question number: 1

» Current Electricity » Wheatstone Bridge

Appeared in Year: 2010

MCQ▾

Question

Figure A below shows a wheat stone bridge in which P, Q, R, S are fixed resistances, G is a galvanometer and B is a battery. For this particular case the galvanometer shows zero deflection. Now, only the positions of B and G are interchanged, as shown in figure (b). The new deflection of the galvanometer

Wheat stone bridge (Figure A)

Wheat Stone Bridge (Figure A)

Figure A shows a wheat stone bridge in which P, Q, R, S are fixed resistances, G is a galvanometer and B is a battery.

Wheat stone bridge (Figure B)

Wheat Stone Bridge (Figure B)

Figure shows the positions of B and G are interchanged.

Choices

Choice (4) Response

a.

is to the left

b.

is to the righ

c.

is zero

d.

depends on the values of P, Q, R, S

Question number: 2

» Current Electricity » Kirchhoff's Laws

MCQ▾

Question

Figure below shows a portion of an electric circuit with the currents in amperes and their directions. The magnitude and direction of the current in the portion AB is

A section of electric circuit starting A

A Section of Electric Circuit Starting A

Figure shows a section of an electric circuit. The magnitude and direction of the current are also shown in figure.

Choices

Choice (4) Response

a.

1 A

b.

4 A

c.

2 A

d.

3 A

Question number: 3

» Current Electricity » Electric Current

MCQ▾

Question

Consider a circuit below. The bulb will light up if

Circuit diagram consist of three switches and a bulb

Circuit Diagram Consist of Three Switches and a Bulb

Figure shows a circuit of three switches and a bulb.

Choices

Choice (4) Response

a.

S 1, S 2 and S 3 all are closed.

b.

S 1 is closed but S 2 and S 3 are open

c.

S 2 and S 3 are closed but S 1 is open

d.

S 1 and S 3 are closed but S 2 is open

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