Direct current - class-X
| Description: direct current | |
| Number of Questions: 19 | |
| Created by: Sundari Chatterjee | |
| Tags: magnetic effects of electric current electricity and magnetism electric charge and electric current physics |
Dry cell is a source of
In the direct current:
The current in the armature of a motor is reversed every half cycle due to the action of on:
What is the voltage of the electricity that is generally supplied to a house ?
In a dry cell
Secondary cells are also knows as
Which of the following is a source of direct current.
The function ${\sin}^{2}{\omega t}$ represents:
The frequency of A.C mains in India is
In the direct current
An alternating voltage is connected across a series $RLC$ Circuit through an $a.c.$ ammeter. The ammeter reading is the.....
The outlets in your home provide.
The .... is a current of constant magnitude flowing in one direction.
A cell basically consists of ....... conducting rods.
A secondary cell can provide______ current.
What will be the reading of a hot wire voltmeter if it is connected across the terminals of a generator whose voltage wave form is represented by
$V = 200\sin \omega t + 100\sin 3\omega t + 50\sin 5\omega t$?
Which of the following is wrong?
If the instantaneous emf and the instantaneous current equations of an A.C. circuit are respectively
$e = E _0 sin(\omega t - \pi/6), i = I _0 sin (\omega t + \pi/6)$, then the phase difference between voltage and current is :
Which of the following is not a chemical cell