A wire of resistance r is elongated n fold

Asked by admin @ 13/08/2021 in Physics viewed by 303 People

A wire of resistance R is elongated n-fold to make a new uniform wire. the resistance of new wire is

a) nRb)n²Rc)2nRd)2n²Rplease answer properly

Answered by admin @ 13/08/2021

Answer:

B is correct answer

Hope this helps you

Plz mark my answer as brainist answer

A piece of wire of resistance r is cut

Asked by admin @ 13/08/2021 in Physics viewed by 290 persons

a piece of wire of resistance R is cut into 5 equal parts . these are then connected in parallel to form a combination R1 . what will be the …

A coil having n turns and resistance r ohm

Asked by admin @ 20/08/2021 in Physics viewed by 311 persons

A coil having n turns and resistance r ohm is connected with a galvanometer of resistsnce 4r ohm .this combination is moved in time t sec from a magnetic field …

A wire of resistance 5 ohm is bent

Asked by admin @ 29/08/2021 in Physics viewed by 364 persons

a wire of resistance 5 ohm is bent in the the form of a circle . what is the effective resistance between the two ends of any diameter of the …

Electrical resistivity of a metallic wire depends on

Asked by admin @ 29/08/2021 in Chemistry viewed by 286 persons

Electrical resistivity of a given metallic wire depends upon (a) its length (b) its thickness (c) its shape (d) nature of the material NCERT Class X Science - Exemplar Problems …

A piece of wire of resistance 20 ohm

Asked by admin @ 26/08/2021 in Science viewed by 327 persons

A piece of wire of resistance 20 ohm is drawn out as that its length is increased to twice its original length .calculate new resistance.

As the length of a wire increases the resistance

Asked by admin @ 23/08/2021 in Physics viewed by 322 persons

If the length of wire increases by 1/3 times then its resistance becomes

A battery has emf 4v and internal resistance r

Asked by admin @ 23/08/2021 in Physics viewed by 314 persons

A bettery has emf 4v and internal resistance r when this battery is connected to an external resistance of 2 ohms,a current of 1 amp.Flows in the circuit.How much current …

A copper wire has a resistance of 0.5 ohm

Asked by admin @ 23/08/2021 in Physics viewed by 316 persons

a copper wire has a resistance of 0.5ohm.another wire of the same mass as the first one is double in length of first.find the resistance of second wire

If the resistance of a certain copper wire is

Asked by admin @ 20/08/2021 in Chemistry viewed by 343 persons

If the resistance of a certain copper wire is 1 ohm, then the resistance of a similar nichrome wire will be about : Choose the option 25 ohm 30 ohm …

A set of n equal resistors of value r

Asked by admin @ 20/08/2021 in Physics viewed by 326 persons

First a set of n equal resistors of R each are connected in series to a battery of EMF, E and internal resistance,R. A current I is observed to flow. …

1111 r 2222 t 3333 e 4444 n 5555

Asked by admin @ 17/08/2021 in Math viewed by 353 persons

If 1111=R, 2222=T, 3333=E, 4444=N Then 5555=?

A copper wire has diameter 0.5 mm and resistivity

Asked by admin @ 17/08/2021 in Math viewed by 307 persons

A copper wire has diameter 0.5mm and resistivity 1.6x10^-8ohm m what will be the length of this wire to make its resistance 10ohm

The magnetic flux through a circuit of resistance r

Asked by admin @ 17/08/2021 in Physics viewed by 274 persons

The magnetic flux through a circuit of resistance R changes by an amount ∆Φ in a time ∆t. Then the total quantity of electric charge Q that passes any point …

Resistance of a given wire is obtained by measuring

Asked by admin @ 16/08/2021 in Physics viewed by 349 persons

Resistance of a given wire is obtained by measuring the current flowing in it and the voltage differenceapplied across it. If the percentage errors in the measurement of the current …

Resistance of a wire is directly proportional to its

Asked by admin @ 13/08/2021 in Math viewed by 322 persons

The resistance of a wire, R ohms (Ω), is directly proportional to its length, l m, and inversely proportional to the square of its radius, r m. (a) Make r …