(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Define the term resistivity. 

At what voltage and frequency is the electric power generated at the power generating station?

Explain with the aid of a simple diagram, the transmission of electric power from the generating station to your house.

At what voltage is the electric power from the generating station transmitted? Give reason to your answer.

At what voltage is the a.c. supplied to our houses?

Name the device used to decrease the voltage at the substation for its supply.

1. Name the three connecting wires used in a household circuit.
2. Which of the two wires mentioned in part (a) are at the same potential?
3. In which of the wire stated in part (a) the switch is connected?

What is the pole fuse? Write down its current rating.

The electrical appliances in a house are connected in ______.

The rating of a fuse connected in the lighting circuit is ______.

A switch must be connected in ______.

Describe an experiment to demonstrate that there is a magnetic field around a current carrying conductor.

Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω

What will happen to a compass needle when the compass is placed below a wire with needle parallel to it and a current is made to flow through the wire? Give a reason to justify your answer.

A given wire of resistance 1 Ω is stretched to double its length. What will be its new resistance?

When current flows in a wire, it creates ______.

State two differences between the e.m.f. and terminal voltage of a cell.

The present of magnetic field at a point can be detected by ______.

By reversing the direction of current in a wire, the magnetic field produced by it:

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.