Question # 1

If force in the direction of velocity of conductor, then induced current is directed,

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Anti clockwise

Clock wise

At equilibrium

None of above

Electric flux is a:

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Scalar quantity

Vector quantity

Variable quantity

None of these

The wavelength associated with the protons moving at speed of 40 m/s is.

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7.20 nm

9.02

15.7 nm

17.3 nm

A diode characteristic curve is a plot between

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Current and time

Voltage and time

Voltage and current

Forward voltage and reverse voltage

The shortest wave length is Bracket series has wave length.

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16/Rn

Rn/16

16 Rn

4 Rn

The name of the scientist who noted that a compass needle was deflected when placed near the current carrying conductor

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Henry

Faraday

Coloumb

Oersted

The series in visible region is:

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Balmer series

Pfund series

Paschen series

None of above

Which material should be inserted between the plates of a capacitor in order to increase its capacitance.

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Copper

Mica

Iron

Tin

For normal transistor the emitter current can be given by

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I_E = I_C

I_E = I_C + I_B

I_E = I_B

None of these

The movement of conductor in magnetic field produces electrical current was discovered in:

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1931

1731

1842

1831

In D.C. generator, split rings act as.

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Capacitor

Commutator

Resistor

Inductor

A force of 0.01 N is exerted on a charge 1.2 x 10^-5 C at a certain point. The electric field at that point is

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1.2 x 10⁴ N/C

1.2 x 10⁴ C/N

8.3 x 10² N/C

8.3 x 10^-2 N/C

The value of Stefan is constant is:

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4.57 x 10^-8 m²k²

5.67 x10^-8 wm^-2k^-4

6.67x 10^-11 wm²k⁴

7.45 x 10^-9 m² wk³

The slope of q-t curve at any instant of time gives.

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Voltage

Current

Charge

Botha a and b

By increasing the temperature of conductor, the flow rate of charges.

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Increase

Remains constant

Decreases

Changes exponentially

A positive charge is moving towards an observer, The direction of magnetic induction will be.

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Toward right

Anti clockwise

Clockwise

Toward left

The fact that electric field exist in space around an electrical charge is

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Electrical property

Gravitational property

Intrinsic property of nature

Extrinsic property of nature

The Direction of induced current is always so as to oppose the change which causes the current, is:

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Faraday's law

Lenz's law

Ohm's law

Kirchhoff' s1ast rule

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