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Popular Questions
- When 5V potential difference is applied across a wire of length 0.1 m, the drift speed of electrons is
- A material B has twice the specific resistance of A. A circular wire made of B
- Consider a Copper wire of length L, cross-section area A. it has n number of free electrons per unit volume
- Ohms law is valid if
- The current flowing through a wire depends on time as
- Electric field (E) and current density (J) have relation
- Across a metallic conductor of non-uniform cross section a constant potential difference is applied
- Pick out the wrong feature about carbon resistors
- When the current i is flowing through a conductor, the drift velocity is
- a current of 0.5 A
- a current of 0.3 A is passed
- for an ohmic substance
- suppose the electric company
- of the following the copper conductor that has the least
- for an ohmic resistor
- you wish to triple the rate of energy
- a cetain x rays tube requires
- the mechanical equivalent
- you buy a 75 watt light bulb
- Graphs 2
- a student kept her 60 watt
- if the potential difference across
- two wires made of the same material
- a flat iron is marked 102
- it is better to send
- which one of the following quantities is correctly matched
- if
- two conductors are made of the same
- an certain resistor dissipates
- two wires made of different material
- a certain sample carries a current of 4 A
- for a cylindrical resistor made of the
- for an ohmic substance
- an ordinary light bulb is marked
- two substance are identical except
- five cylindrical wires are made of the same material
- conductivity is
- the rate at which electrical energy is used may be
- energy may be measured in
- the current is zero in a conductor when
