Question # 1

If the resistance of 500 Ohm have fourth band of silver colour then its upper maximum resistance will be.

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600 Ohm

550 Ohm

450 Ohm

400 Ohm

The reciprocal of resistance is called.

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Capacitance

Resistance

Conductance

Inductance

The SI unit of resistivity is.

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Ohm m-2

Ohm m-1

Ohm m

Ohm

Heat energy is converted into electrical energy.

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Solar cells

thermocouples

Electric generators

None of above

Potentiometer is used to.

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Compare emf of two cells

Detect internal resistance of cell

Measure P.D.

All of these

When a wire of length 'l' and resistance R is cut into two equal parts then resistivity of each part.

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is doubled

Remains the same

Is halved

Is one fourth

The color code of "Green"

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8

3

5

7

Kirchhoff's voltage rule is a way of stating conservation of.

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Mass

Charge

Energy

Momentum

The product of resistance and conductance is

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1

Resistivity

Conductance

Zero

Thermosouple is an arrangement of two different metals:

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Two convert heat energy into electrical energy

To produce more heat

To convert heat energy into chemical energy

To convert electrical energy into heat energy

The unit of temperature co efficient of resistivity is.

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Ohm -m

K-1

K

Ohm

If 1 x 10⁷ electrons passes through a conductor in 1.0 micro second , then the current is.

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2 A

1.6 A

2.6 x 10^-6 A

1.6 x 10^-6 A

Heat generated by a 40 W bulb in one hour is.

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140 J

1440 J

14400 J

144000 J

Resistance tolerance of silver band is.

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10%

6%

7%

5%

In gas the charge carriers are:

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Electrons

Ions

Both a & b

None of above

For non-ohmic devices, the graph between V and I is

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Not a straight line

A straight line

A curve

All of above

The current through a resistance of 100 Ohm when connecting across a source of 220 V is.

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22000 A

22 A

2.2 A

0.45 A

The algebraic sum of potential change in a closed circuit is zero.

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Kirchhoff's 1st rule

Kirchhoff 2^nd rule

Krichoff's 3^rd rule

Kirchhoff 4^th rule

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