Advertisements
Advertisements
प्रश्न
Which of the following units could be used to measure electric charge?
(a) ampere
(b) joule
(c) volt
(d) coulomb
Advertisements
उत्तर
coulomb
It is the SI unit of electric charge
APPEARS IN
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use
Wire crossing
By what name is the physical quantity coulomb/second called?
One coulomb of charge flows through any cross-section of a conductor in 1 second. What is the current flowing through the conductor?
How many electrons are flowing per second past a point in a circuit in which there is a current of 5 amp?
State the factors on which the strength of electric current flowing in a given conductor depends.
A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 0.12 Ω. How much current would flow through the 12 Ω resistor?
Give three reasons why different electrical appliances in a domestic circuit are connected in parallel.
Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an â’¶ on your diagram to show where an ammeter should be placed to measure the current.
Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω
Complete the following sentence:
A fuse is a short piece of wire of high ......... and low
Complete the following sentence:
A fuse is connected in ........... with the ......... wire.
A current of 0.3 A is flowing through a branch of 6 Ω resistors in a junction as shown in fig. . Calculate the
(a) P.d. across the junction XY,
(b) Current flowing through 9Ω and 24Ω
( c) P.d. across 24 Ω resistor, and
( d) e.m.f. of the cell.

The circuit diagram (Fig.) shows a battery of e.m.f. 6 volts and internal
resistance of 0.8 Ω oonnected in series. Find the
(a) Current reoorded by the ammeter,
(b) P.d. across the terminals of the resistor B,
( c) Current passing through each of the resistors B, C and D, and
( d) P.d. across the terminals of the battery.

Study the following circuit and find out:
(i) Current in 12 Ω resistor.
(ii) The difference in the readings of A1 and A2, if any.

One unit of electrical energy consumed is equal to 1000 kilowatt-hour.
Problems for practice:
If 5A current flows through a circuit, then convert the current in terms of microampere?
Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
Assertion (A): Electric current will not flow between two charged bodies when connected if their charges are the same.
Reason (R): Current is the rate of flow of charge.
