AIPMT | 2015Current Electricity and Electrical InstrumentHard
Question
Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is :
Options
A.current
B.drift velocity
C.electric field
D.current density
Solution
Metallic conductor can be considered as the combination of various conductors connected in series combination. And in series combination the current always remains constant.

Hence option (1)

Hence option (1)
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A light source, which emits two wavelengths λ1= 400 nm and λ2= 600 nm, is used in a Young′s double slite...A micro-ammeter has a resistance of 100 Ω and full scale range of 50 mA. It can be used as a voltmeter and an ammet...A moving coil galvanometer of resistance $100\Omega$ shows a full scale deflection for a current of 1 mA . The value of ...In the circuit shown, reading of the voltmeter connected across 400 Ω resistance is 30 V. If it is connected across...The ammeter shown in figure consists of a 480 Ω coil connected in parallel to a 20 Ω shunt. Find the reading o...