Advertisements
Advertisements
प्रश्न
Which of the following equation shows the correct relationship between electrical unit?
1A = 1C/s or 1c= 1A/s
Advertisements
उत्तर
Because current, I = Q/t, the correct relationship is
`1A= (1C)/(1s)`
APPEARS IN
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use
Wire crossing
Draw the electrical symbols of the following components and state its use:
Rheostat (variable resistance)
The work done in moving a unit charge across two points in an electric circuit is a measure of:
(a) current
(b) potential difference
(c) resistance
(d) power
State the factors on which the strength of electric current flowing in a given conductor depends.
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.
(i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY.
What happens to the other bulbs in a parallel circuit if one bulb blows off?
Which type of circuit, series or parallel, is preferred while connecting a large number of bulbs:
(a) for decorating a hotel building from outside?
Two lamps, one rated 40 W at 220 V and the other 60 W at 220 V, are connected in parallel to the electric supply at 220 V.
(a) Draw a circuit diagram to show the connections.
(b) Calculate the current drawn from the electric supply.
(c) Calculate the total energy consumed by the two lamps together when they operate for one hour.
State the S.I. unit of current.
A wire of uniform thickness with a resistance of 27Ω is cut into three equal pieces and they are joined in parallel. Find the equivalent resistance of the parallel combination.
In the circuit shown in fig. 6, find the reading of the ammeter A when the switch S is
(a) Opened.
(b) Closed.

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?
What is the function of a step-up transformer?
1 kWh = `(1 "volt" xx 1 "ampere" xx "_________")/1000`
Explain, why the potential difference across the terminals of a cell is more when the cell is not in use than it is when the cell is being used.
What is the speed of electric current?
State whether true or false. If false, correct the statement.
Current can produce magnetic field.
Problems for practice:
If 5A current flows through a circuit, then convert the current in terms of microampere?
