Advertisements
Advertisements
Question
Draw the electrical symbols of the following components and state its use:
Ammeter.
Solution
Ammeter:
Use: To measure the current in the circuit.
APPEARS IN
RELATED QUESTIONS
Define the unit of current.
In which direction do electrons flow?
An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 V each and a plug key was set up.
Following graph was plotted between V and I values:
What would be the values of `V/I` rations when the potential difference is 0.8 V, 1.2 V and 1.6 V respectively?
What conclusion do you draw from these values?
What is the resistance of the wire?
Tick(✓) the correct choice in the following:
Which of the following quantities has the same value for all electrical
appliances connected to the ring main circuit in a house?
If a fuse contains a 5 A fuse wire and the voltage is 240 V, what is the maximum power (wattage) which may be taken from the circuit?
The circuit diagram in fig shows two coils of an insulated copper wire wound on a cardboard tube. G is a center zero galvanometer.
(a) Describe what will happen when th e swi tch K is cl osed for severa l
seconds and then opened again .
(b) What will be the effect of repeating the experiment with an iron placed in the tube?
Tick (✓) the correct choice among the following :
In fig .XY is at right angles to the magnetic field. The direction in
which XY should be moved to induce an electron flow in the direction Y to X as indicated by the arrow is
State the S.I. units of electrical power.
Define the term kilowatt - hour and state its value in S.I. unit.
How is direction of current related to the direction of flow of electrons?
Which part of an electrical appliance is earthed?
An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?
Which of the following represents voltage?
The flow of electric charge per unit time is called potential difference.
