Calorimetry — Physics STD 10 — Question

Write an expression for the electrical power spent in flow of current through a conductor in terms of current and resistance.

Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A stretched wire

Energy can exist in several forms and may change from one form to another. For the following, state the energy changes that occur in:
a car going uphill

Give two examples of P.E.

How is e.m.f. in primary and secondary coils of a transformer related with the number of turns in these coils?

Define the term intensity of a sound wave. State the unit in which it is measured.

A ray of light is normally incident on one face of an equilateral glass prism. Answer the following:
What is the angle of refraction from the first face of the prism?

A ray of light incident at an angle of incidence ‘i’ passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges from the prism at an angle of emergence ‘e’.
How is the angle of emergence ‘e’ related to the angle of incidence ‘i’?

Does a voltmeter have a low or high resistance?

State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be Zero.