English Medium Class 10 - CBSE Question Bank Solutions for Science

Three 2 V cells are connected in series and used as a battery in a circuit. 

How many joules of electrical energy does 1 C gain on passing through (i) one cell (ii) all three cells?

The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber does not conduct electricity?

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

What is the Flow of Charge Called?

What actually travels through the wires when you switch on a light?

Which particles constitute the electric current in a metallic conductor?

 In which direction does conventional current flow around a circuit?

In which direction do electrons flow?

Which of the following equation shows the correct relationship between electrical unit? 

1A = 1C/s or 1c= 1A/s 

What is the unit of electric current?

How many milliamperes as there in 1 ampere?

How many microamperes are there in 1 ampere?

Which of the two is connected in series : ammeter or voltmeter?

Compare how an ammeter and a voltmeter are connected in a circuit.

If 20 C of charge pass a point in a circuit in 1 s, what current is flowing?

A current of 4 A flows around a circuit for 10 s. How much charge flows past a point in the circuit in this time?

What is the current in a circuit if the charge passing each point is 20 C in 40 s?

Fill in the folloing blank with suitable words:

 A current is a flow of ............... .For this to happen there must be a ............... circuit.

Fill in the folloing blank with suitable words:  

 Current is measured in ............... using an ............... placed in ............... in a circuit.

What is an electric current?