Two wires have their lengths, diameters and resistivities all in the ratio of 1 : 2 : 1. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is

Two wires have their lengths, diameters and resistivities all in the r

1.	Two wires have their lengths, diameters and resistivities all in the ratio of 1 : 2 : 1. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is
A.	5 ohm
B.	10 ohm
C.	20 ohm
D.	40 ohm
Answer» C. 20 ohm

Discussion

No Comment Found

Related MCQs

Consider the following statements An ordinary light bulb has a rather short life because the 1. Filament wire is not uniform 2. Bulb cannot be evacuated completely 3. Wires supporting the filament melt at high temperatures. Which of the above statements are correct?
Consider the following statements regarding a motor car battery 1. The voltage usually 12 V 2. Electrolyte used in hydrochloric acid 3. Electrodes are lead and copper 4. Capacity is expressed in ampere-hour Which of the above statements are correct?
Consider the following statements 1. An isolated electric charge exist, but an isolated magnetic monopole does not exist. 2. Electric lines of force are not closed, but magnetic lines of force are closed Which of the statements given above is / are correct?
The SI unit of pole strength is
What is the difference between a CFL and an LED LAMP ? 1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material. 2. The average life span of a CFL is much longer than of an LED lamp. 3. A CFL is LESS energy-efficient as compared to an LED lamp. Which of the statements given above is / are correct ?
Assertion (A) : In our houses, the current in AC electricity line changes direction 60 times per second. Reason (R): The frequency of alternating voltage supplied is 50 Hz.
Consider the following statements At the present level of technology available in India, Solar energy can be conveniently used to 1. Supply hot water to residential buildings 2. Supply water for minor irrigation projects 3. Provide street lighting 4. Electrify a cluster of villages and small towns
Consider the following statements regarding electric fuse wire 1. If has low melting point 2. It has very high specific resistance 3. It is connected in parallel with the electric circuit Which of the statements given above is / are correct?
Au, Ag, Cu, Zn, Sb, Bi, H2O and air are examples of
What is the source of electrical energy in an artificial satellite ?

Two wires have their lengths, diameters and resistivities all in the ratio of 1 : 2 : 1. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is

Discussion

No Comment Found

Related MCQs

Reply to Comment