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Q1. | Reciprocal of specific resistance is |

A. | Conductive resistance [Wrong Answer] |

B. | Specific conductance [Correct Answer] |

C. | Conductive reactance [Wrong Answer] |

D. | Plate resistance [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ Conductance is reciprocal of

resistance

inductance

reluctance

capacitance

⇒ The resistance of a straight conductor does not depend upon its

Shape of cross-section

Temperature

Material

Length

⇒ Voltage dependent resistors are usually made from

charcoal

silicon carbide

nichrome

graphite

⇒ For which of the following substances the temperature co-efficient of resistivity is positive ?

Carbon

Germanium

Electrolyte

Aluminium

⇒ If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes

0.4 ohm

0.6 ohm

0.8 ohm

1.0 ohm

⇒ Which of the following statements is correct regarding resistance?

The resistance of a conductor is the hindrance by which the conductor opposes the flow of current through it.

The resistance of wire is independent of the temperature for most of the materials

The resistance of a wire does not depend upon its material.

None of the above.

⇒ You have to replace 1500 ω resistor in radio. You have no 1500 ω resistor but have several 1000 ω ones which you would connect

two in parallel

two in parallel and one in series

three in parallel

three in series

⇒ In a circuit a 33 ω resistor carries a current of 2 A. The voltage across the resistor is

33V

66V

80 V

132V

⇒ In an ordinary heater if the length of the coil is halved, then a given quantity of water will boil

Less time

More time

Same time

None of these

⇒ Two resistors R1 and R2 give combined resistance of 4.5 ω when in series and 1 ω when in parallel, the resistances are

2 ω and 2.5 ω

1 ω and 3.5 ω

1.5 ω and 3 ω

4 ω and 0.5 ω

⇒ A thermistor has

positive temperature coefficient

negative temperature coefficient

zero temperature coefficient

variable temperature coefficient

⇒ Which of the following materials possesses the least specific resistance?

Aluminium.

Copper.

Silver.

Iron.

⇒ Varistors are

insulators

non-linear resistors

carbon resistors

resistors with zero temperature coefficient

⇒ Specific resistance of a conductor depends upon

dimensions of the conductor.

composition of conductor material.

resistance of the conductor

both (a) and (b).

⇒ The temperature coefficient of resistance of some material is negative. The material is

Copper

Aluminium

Iron

Gennanium

⇒ Three resistances each of R Ω are corrected to form a triangle. The resistance between any two terminals will be

R Ω

3/2 R Ω

3 R Ω

2/3 R Ω

⇒ The hot resistance of the filament of a bulb is higher than the cold resistance because the temperature coefficient of the filament is

negative.

infinite.

zero.

positive.

⇒ Two copper conductors have equal length. The cross-sectional area of one conductor is four times that of the other. If the conductor having smaller cross-sectional area has a resistance of 40 ohms the resistance of other conductor will be

160 ohms

80 ohms

20 ohms

10 ohms

⇒ An open resistor, when checked with an ohm-meter reads

zero

infinite

high but within tolerance

low but not zero

⇒ The example of non-ohmic resistance is

Copper wire

Carbon resistance

Diode

Tungsten wire

⇒ The temperature-coefficient of resistance of conductors is

Positive

Negative

Neutral

First A then C

⇒ The resistance of a conductor varies inversely as

length

area of cross-section

temperature

resistivity

⇒ Which of tite following materials has the least resistivity?

Zinc

Lead

Mercury

Copper

⇒ A 3 ω resistor having 2 A current will dissipate the power of

2 watts

4 watts

6 watts

8 watts

⇒ N equal resistances are first connected in series and then connected in parallel. What is the ratio of the maximum to the minimum resistance ?

n

^{ 1 }^{n2}

n

^{2}

^{1}/

_{n}

⇒ A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is

6.4 A, 6.9 A

6.4 A, 9.6 A

4.6A, 6.9A

4.6A,9.6A

⇒ Which of the following is an ohmic conductor?

Transistors

Thermionic valves

Constanton

Electrolyte

⇒ Which resistor will be physically larger in size?

100ω, 10W

10ω, 50W

1Mω, 1/2W

1kω, 1W

⇒ Reciprocal of specific resistance is

Conductive resistance

Specific conductance

Conductive reactance

Plate resistance

⇒ With rise in temperature the resistance of semi-conductors

decreases

increases

first increases and then decreases

remains constant