What Do You Mean by Direct Current?

What do you mean by direct current?

One Line Answer

If the current flows along the same direction with time, it is called a direct current (D.C.).

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Chapter 4: Electricity and Magnetism - Exercise 4.3 ii [Page 206]

Chapter 4 Electricity and Magnetism
Exercise 4.3 ii | Q 1 | Page 206

Draw the electrical symbols of the following components and state its use:

Rheostat (variable resistance)

By what name is the physical quantity coulomb/second called?

If the lamps are both the same in the figure given below and if A₁ reads 0.50 A, what do A₂, A₃, A₄ and A₅ read?

Name two devices which work on the heating effect of electric current.

Define the following:

Electromotive force