Question

a) A 4 ohm resistance wire is doubled on itself.
Calculate the new resistance of the wire. 25

b) What is meant by resistance of a conductor? Name and define its SI unit. List the factors on which
the resistance of a conductor depends how is the resistance of a wire affected if

* Its length is doubled
* Its radius is doubled
OR

a) How is a voltmeter connected in the circuit to measure the potential difference between two
points?

b) Show how you would connect three resistors, each oi v ohm, so that the combination has a
resistance of
i) 9 ohm
ii) 4 ohm​

Answer 1

Explanation:

When a dielectric material is introduced between the plates And when a dielectric material is placed between the plates of parallel plate capacitor then due to polarization of charges on either side of the dielectric, it produces an electric field of its own which acts in a direction opposite to that of the field due ...