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

What is the nature of current transmitted from the power station?

The voltage of power generated at the generating stations is first stepped up before its transmission. Give reason.

State the function of the following in a house circuiting of main fuse.

State the function of  the following in a house circuiting of main switch.

State one advantage of using the main switch in house wiring.

State the atomic number and mass number of  \[\ce{^23_11Na}\]  and draw its atomic model.

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.

How is direction of current related to the direction of flow of electrons?

State expression for Cells connected in series.

What is meant by internal resistance of a cell?

State the condition when it is advantageous to connect cells in series.

State the condition when it is advantageous to connect cells in parallel.

How should the electric lamps in a building be connected?

What determines the direction of flow of electrons between two charged conductors kept in contact?

Which part of an electrical appliance is earthed?

State the conditions for the flow of charge in a circuit from one point to the other.

An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.

An electrical appliance is rated at 1000 KVA, 220V. If the appliance is operated for 2 hours, calculate the energy consumed by the appliance in: (i) kWh (ii) joule.

Three resistances, of which two are equal when connected in series have an effective resistance of 30 ohms. When the three resistances are connected in parallel, the effective resistances is 3 ohms. Find the values of the individual resistances.

An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?