Question # 1

Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is:

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3Ω

4Ω

4.5Ω

5Ω

A charged conductor has charge on its.

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Inner surface

Outer surface

Middle surface

Surrounding space

The unit of temperature co efficient of resistivity is.

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Ohm -m

K-1

K

Ohm

What is the resistance of carbon resistor which has band brown black brown.

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100 Ohm

1000 Ohm

10 Ohm

1.0 Ohm

Resistance tolerance for gold colour is.

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50%

30%

20%

5%

The vessel containing the tow electrodes and liquid to known as.

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Chemical cell

Volt cell

Volta cell

Volta meter

For ohmic device the graph between V and I is.

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A straight line

Curve

Hyperbola

Parabola

Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is.

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10 kelvin

70 kelvin

200 kelvin

35 kelvin

In gas the charge carriers are:

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Electrons

Ions

Both a & b

None of above

Resistivity at a given temperature depends upon.

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Area of cross section

Length

Nature of material of conductor

Both length and area

The condition for the wheatstone bridge to be balanced is given by

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None of above

Magnetic effect of current is used

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To detect a current

To measure a current

In electric motor

All of above

The potential difference between the head and tail of an electrical to

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600 Volt

700 Volt

800 Volt

900 Volt

In carbon resistors, then value of Blue colour is.

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6

7

8

9

Heat sensitive resistors are called.

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resistors

Capacitor

Thermistors

Inductors

A rheostat can operate as.

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Amplifier

Potential divider

Oscillator

Transformer

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

Which one of the following bulbs has the least resistance.

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100 W

200 W

500 W

1000 W

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